lcd display arduino tinkercad price

In this project I am going to discuss about a simple project on Arduino UNO-R3. In this project I am going to show you all of you a system that is temperature controlled fan.

This project objective is to recognize the gesture of the fingers here assumed as individual flex sensor. With the curl of fingers, the graphical LCD display o or I, which signifies open or closed fingers

Here’s a diagram of the pins on the LCD I’m using. The connections from each pin to the Arduino will be the same, but your pins might be arranged differently on the LCD. Be sure to check the datasheet or look for labels on your particular LCD:

Also, you might need to solder a 16 pin header to your LCD before connecting it to a breadboard. Follow the diagram below to wire the LCD to your Arduino:

If you’ve ever tried to connect an LCD display to an Arduino, you might have noticed that it consumes a lot of pins on the Arduino. Even in 4-bit mode, the Arduino still requires a total of seven connections – which is half of the Arduino’s available digital I/O pins.

The solution is to use an I2C LCD display. It consumes only two I/O pins that are not even part of the set of digital I/O pins and can be shared with other I2C devices as well.

True to their name, these LCDs are ideal for displaying only text/characters. A 16×2 character LCD, for example, has an LED backlight and can display 32 ASCII characters in two rows of 16 characters each.

If you look closely you can see tiny rectangles for each character on the display and the pixels that make up a character. Each of these rectangles is a grid of 5×8 pixels.

At the heart of the adapter is an 8-bit I/O expander chip – PCF8574. This chip converts the I2C data from an Arduino into the parallel data required for an LCD display.

If you are using multiple devices on the same I2C bus, you may need to set a different I2C address for the LCD adapter so that it does not conflict with another I2C device.

An important point here is that several companies manufacture the same PCF8574 chip, Texas Instruments and NXP Semiconductors, to name a few. And the I2C address of your LCD depends on the chip manufacturer.

So your LCD probably has a default I2C address 0x27Hex or 0x3FHex. However it is recommended that you find out the actual I2C address of the LCD before using it.

Connecting an I2C LCD is much easier than connecting a standard LCD. You only need to connect 4 pins instead of 12. Start by connecting the VCC pin to the 5V output on the Arduino and GND to ground.

Now we are left with the pins which are used for I2C communication. Note that each Arduino board has different I2C pins that must be connected accordingly. On Arduino boards with the R3 layout, the SDA (data line) and SCL (clock line) are on the pin headers close to the AREF pin. They are also known as A5 (SCL) and A4 (SDA).

After wiring up the LCD you’ll need to adjust the contrast of the display. On the I2C module you will find a potentiometer that you can rotate with a small screwdriver.

Plug in the Arduino’s USB connector to power the LCD. You will see the backlight lit up. Now as you turn the knob on the potentiometer, you will start to see the first row of rectangles. If that happens, Congratulations! Your LCD is working fine.

To drive an I2C LCD you must first install a library called LiquidCrystal_I2C. This library is an enhanced version of the LiquidCrystal library that comes with your Arduino IDE.

The I2C address of your LCD depends on the manufacturer, as mentioned earlier. If your LCD has a Texas Instruments’ PCF8574 chip, its default I2C address is 0x27Hex. If your LCD has NXP Semiconductors’ PCF8574 chip, its default I2C address is 0x3FHex.

So your LCD probably has I2C address 0x27Hex or 0x3FHex. However it is recommended that you find out the actual I2C address of the LCD before using it. Luckily there’s an easy way to do this, thanks to the Nick Gammon.

But, before you proceed to upload the sketch, you need to make a small change to make it work for you. You must pass the I2C address of your LCD and the dimensions of the display to the constructor of the LiquidCrystal_I2C class. If you are using a 16×2 character LCD, pass the 16 and 2; If you’re using a 20×4 LCD, pass 20 and 4. You got the point!

First of all an object of LiquidCrystal_I2C class is created. This object takes three parameters LiquidCrystal_I2C(address, columns, rows). This is where you need to enter the address you found earlier, and the dimensions of the display.

In ‘setup’ we call three functions. The first function is init(). It initializes the LCD object. The second function is clear(). This clears the LCD screen and moves the cursor to the top left corner. And third, the backlight() function turns on the LCD backlight.

After that we set the cursor position to the third column of the first row by calling the function lcd.setCursor(2, 0). The cursor position specifies the location where you want the new text to be displayed on the LCD. The upper left corner is assumed to be col=0, row=0.

There are some useful functions you can use with LiquidCrystal_I2C objects. Some of them are listed below:lcd.home() function is used to position the cursor in the upper-left of the LCD without clearing the display.

lcd.scrollDisplayRight() function scrolls the contents of the display one space to the right. If you want the text to scroll continuously, you have to use this function inside a for loop.

lcd.scrollDisplayLeft() function scrolls the contents of the display one space to the left. Similar to above function, use this inside a for loop for continuous scrolling.

If you find the characters on the display dull and boring, you can create your own custom characters (glyphs) and symbols for your LCD. They are extremely useful when you want to display a character that is not part of the standard ASCII character set.

CGROM is used to store all permanent fonts that are displayed using their ASCII codes. For example, if we send 0x41 to the LCD, the letter ‘A’ will be printed on the display.

CGRAM is another memory used to store user defined characters. This RAM is limited to 64 bytes. For a 5×8 pixel based LCD, only 8 user-defined characters can be stored in CGRAM. And for 5×10 pixel based LCD only 4 user-defined characters can be stored.

Creating custom characters has never been easier! We have created a small application called Custom Character Generator. Can you see the blue grid below? You can click on any 5×8 pixel to set/clear that particular pixel. And as you click, the code for the character is generated next to the grid. This code can be used directly in your Arduino sketch.

After the library is included and the LCD object is created, custom character arrays are defined. The array consists of 8 bytes, each byte representing a row of a 5×8 LED matrix. In this sketch, eight custom characters have been created.

Are you on the lookout for a good Arduino simulator? Wondering what an Arduino simulator is? We’ve gotten a lot of questions about Arduino simulators, and if a good simulator exists, so keep watching to find out more!

What does that actually mean? Let’s look at an example. Now some people have different interpretations of what the famous “Hello World” circuit is.  Some say it’s your first project where you create a simple blinking LED circuit; others claim it’s when you have an LCD display that says “Hello world!”

So we’ve setup the circuit, we’ve programmed the code in the Arduino IDE, we’ve uploaded it, and now we have a real world, physical circuit that blinks the LED. This took about 6 minutes to construct.

Next we’ll use the free online Arduino simulator software at TinkerCAD. In about 2 minutes we’ve created exactly the same circuit, we’ve used the same exact code, and after hitting the “start simulation button”, we have a virtual version of exactly the same circuit. That is some serious efficiency!

Next we’ll show you exactly how to build the blinking LED circuit from previously. First go toTinkerCAD and setup an account if you don’t already have one. After that you’ll find yourself in the dashboard, this is where we can view previous designs or choose to create a new one.

One thing to note: you can select Components > Starters > Arduino and here you can access a bunch of premade circuits which are called assemblies. You can click and drop the “Blink” assembly, which will provide all the necessary components, as well as the code to make the circuit run.

If you click “Start Simulation” you will see this circuit functions as advertised. So let’s create it from scratch instead.  The first thing we will want to do is make sure we have components placed in our project. Type in “Arduino” in the components side menu and then click and drop the UNO3.

Lastly we will wire it up. You do not find wires in the component list, you simply click on either the breadboard or the Arduino pins with the left mouse button and a wire begins.

So that’s how you build the circuit.  Let’s look at the code. You can see it’s already preloaded with a sketch because we had previously selected the “Blink” starter assembly. You can also see it’s in a format that may seem a little unusual, “block view“. You can mess around with this view if you want, but we typically like to view the code in “text view” which is the same as the official Arduino IDE.

So that’s how you build a very basic blinking LED circuit in TinkerCAD. There are lots of other really cool things about Tinkercad which we’ll explore now.

Go to your main dashboard by clicking the TinkerCAD logo at the top left of the screen, then click the “Learn” tab at the top right of the screen. Next click the drop down button (which defaults to 3D) and select “Circuits”. Here you can select various start guides and lessons.

If you select “Projects”, then “Show all Arduino”, you can see various projects at the bottom with the green backgrounds. All of these projects correspond to the starter projects that are included in the the official Arduino.CC starter kit, which is super helpful if you have that kit and want to follow along.

You can see how there’s tons of really useful stuff on Tinkercad. It’s not only a great place to design circuits, but also a great place to learn from the community and get inspiration.

In this project, we will create a smoke detector setup using Arduino in the Tinkercad platform. The setup is simple and can be made by anyone. Also, the components we use are cheap and the hardware setup can be used in our homes, workplaces, etc. So let’s get started with the project and see its simulation.

You can visit the Tinkercad platform by clicking here. If you’re unfamiliar with the Tinkercad platform and want to know more about it, you can click here.

Subsequently, let’s start connecting the components one by one. So, let’s start by looking into the gas sensor connections. The gas sensor provided in Tinkercad has 6 terminals, namely A1, H1, A2, B1, H2, and B2.Connect the terminals A1, H1, and A2 to the power supply. After that, connect terminal B1 to the power supply and the terminals H2 and B2 to the ground. In order to increase the accuracy and sensitivity of the gas sensor, we connect a 22kΩ load resistor between the terminal B2 and the ground.

Here, we can see that when the gas sensor readings are below the threshold value, the LED remains GREEN and the piezo sensor doesn’t make any buzzing noise. The serial monitor continuously displays the gas sensor readings on a real-time basis.

In this tutorial, I’ll explain how to set up an LCD on an Arduino and show you all the different ways you can program it. I’ll show you how to print text, scroll text, make custom characters, blink text, and position text. They’re great for any project that outputs data, and they can make your project a lot more interesting and interactive.

The display I’m using is a 16×2 LCD display that I bought for about $5. You may be wondering why it’s called a 16×2 LCD. The part 16×2 means that the LCD has 2 lines, and can display 16 characters per line. Therefore, a 16×2 LCD screen can display up to 32 characters at once. It is possible to display more than 32 characters with scrolling though.

The code in this article is written for LCD’s that use the standard Hitachi HD44780 driver. If your LCD has 16 pins, then it probably has the Hitachi HD44780 driver. These displays can be wired in either 4 bit mode or 8 bit mode. Wiring the LCD in 4 bit mode is usually preferred since it uses four less wires than 8 bit mode. In practice, there isn’t a noticeable difference in performance between the two modes. In this tutorial, I’ll connect the LCD in 4 bit mode.

Here’s a diagram of the pins on the LCD I’m using. The connections from each pin to the Arduino will be the same, but your pins might be arranged differently on the LCD. Be sure to check the datasheet or look for labels on your particular LCD:

Also, you might need to solder a 16 pin header to your LCD before connecting it to a breadboard. Follow the diagram below to wire the LCD to your Arduino:

All of the code below uses the LiquidCrystal library that comes pre-installed with the Arduino IDE. A library is a set of functions that can be easily added to a program in an abbreviated format.

In order to use a library, it needs be included in the program. Line 1 in the code below does this with the command #include . When you include a library in a program, all of the code in the library gets uploaded to the Arduino along with the code for your program.

Now we’re ready to get into the programming! I’ll go over more interesting things you can do in a moment, but for now lets just run a simple test program. This program will print “hello, world!” to the screen. Enter this code into the Arduino IDE and upload it to the board:

There are 19 different functions in the LiquidCrystal library available for us to use. These functions do things like change the position of the text, move text across the screen, or make the display turn on or off. What follows is a short description of each function, and how to use it in a program.

TheLiquidCrystal() function sets the pins the Arduino uses to connect to the LCD. You can use any of the Arduino’s digital pins to control the LCD. Just put the Arduino pin numbers inside the parentheses in this order:

This function sets the dimensions of the LCD. It needs to be placed before any other LiquidCrystal function in the void setup() section of the program. The number of rows and columns are specified as lcd.begin(columns, rows). For a 16×2 LCD, you would use lcd.begin(16, 2), and for a 20×4 LCD you would use lcd.begin(20, 4).

This function clears any text or data already displayed on the LCD. If you use lcd.clear() with lcd.print() and the delay() function in the void loop() section, you can make a simple blinking text program:

Similar, but more useful than lcd.home() is lcd.setCursor(). This function places the cursor (and any printed text) at any position on the screen. It can be used in the void setup() or void loop() section of your program.

The cursor position is defined with lcd.setCursor(column, row). The column and row coordinates start from zero (0-15 and 0-1 respectively). For example, using lcd.setCursor(2, 1) in the void setup() section of the “hello, world!” program above prints “hello, world!” to the lower line and shifts it to the right two spaces:

You can use this function to write different types of data to the LCD, for example the reading from a temperature sensor, or the coordinates from a GPS module. You can also use it to print custom characters that you create yourself (more on this below). Use lcd.write() in the void setup() or void loop() section of your program.

The function lcd.noCursor() turns the cursor off. lcd.cursor() and lcd.noCursor() can be used together in the void loop() section to make a blinking cursor similar to what you see in many text input fields:

Cursors can be placed anywhere on the screen with the lcd.setCursor() function. This code places a blinking cursor directly below the exclamation point in “hello, world!”:

This function creates a block style cursor that blinks on and off at approximately 500 milliseconds per cycle. Use it in the void loop() section. The function lcd.noBlink() disables the blinking block cursor.

This function turns on any text or cursors that have been printed to the LCD screen. The function lcd.noDisplay() turns off any text or cursors printed to the LCD, without clearing it from the LCD’s memory.

This function takes anything printed to the LCD and moves it to the left. It should be used in the void loop() section with a delay command following it. The function will move the text 40 spaces to the left before it loops back to the first character. This code moves the “hello, world!” text to the left, at a rate of one second per character:

Like the lcd.scrollDisplay() functions, the text can be up to 40 characters in length before repeating. At first glance, this function seems less useful than the lcd.scrollDisplay() functions, but it can be very useful for creating animations with custom characters.

lcd.noAutoscroll() turns the lcd.autoscroll() function off. Use this function before or after lcd.autoscroll() in the void loop() section to create sequences of scrolling text or animations.

This function sets the direction that text is printed to the screen. The default mode is from left to right using the command lcd.leftToRight(), but you may find some cases where it’s useful to output text in the reverse direction:

This code prints the “hello, world!” text as “!dlrow ,olleh”. Unless you specify the placement of the cursor with lcd.setCursor(), the text will print from the (0, 1) position and only the first character of the string will be visible.

This command allows you to create your own custom characters. Each character of a 16×2 LCD has a 5 pixel width and an 8 pixel height. Up to 8 different custom characters can be defined in a single program. To design your own characters, you’ll need to make a binary matrix of your custom character from an LCD character generator or map it yourself. This code creates a degree symbol (°):

Hardware: Arduino UNO R3 , Red LED , Pushbutton , Green LED , 1K ohm Resistor , 10 K ohm resistor , Piezo , LCD , 250 K ohm Potentiometer , 220 ohm Resistor

Abstract: My project name is WOMEN"S SAFETY DEVICE. This device is used for safety purpose of the women in some situations. There will be two push buttons ,one will be connected to the green LED and another will be connected to the red LED and the piezo sensor. I used an LCD also which simulates like the parents mobile screen. If the green LED is glowing, it indicates that she is safe and in the LCD it will be like that "I AM SAFE". If she feels that she is in danger , she can press the push button above the red LED to send signal to her parents that " I NEED HELP" as well as the piezo starts making noise ,so that the people nearby can understand that she is in danger and can take the actions upon the situation. Suppose if she pressed the alert button by mistake ,she can turn it off by pressing the push button three times which is above the green LED. I thought of using the ESP but due to the absence of ESP in the tinker cad ,I used Arduino connections and made the circuit as a simple one .

Abstract: The persons who are suffered from illness, taking pills at right time is necessary. But due to some reasons ill people forgot to take pills. If the persons not taking pills at right time, it leads to create some problems in our body. By reduce these problems, we design the automatic pills remainder. By using this remainder, remind to take pills at right time. With the help of simple microcontroller, When that particular time arrives, it displays the message "Take Pills Right Now" on LCD display, LED is blinking and Buzzer to produce sound. This operation is a cyclic process.

In this project, we will make a Bidirectional Visitor Counter with an Automatic Light Control using Arduino Uno. This project is based on a pair of Infrared PIR Sensor that detects interrupt when it detects an obstacle. The pair of IR sensors can detect the visitor from both directions, i.e. the number of entering visitors and the number of exiting visitors. This Arduino Bidirectional Visitor Counter Project can be used to count the number of persons entering a hall, Shopping mall, office, functions in the entrance gate. It can also be used at gates of parking areas and other public places. The device counts the total number of people entering through the gate and also the total number of people leaving through the same gate. And finally, it counts the total number of people currently present inside the room. When no people are inside the room, i.e. the total number of people is zero then the room light is turned off. When even a single person is found inside the room, the light turns on. When the person leaves the room the buzzer starts to sound. The light control system is automatic based on the visitors’ presence. This project is divided in four parts :sensors,controller, counter display and gate .the sensor would run the counter increment or decrement depending on entering and exiting of the person , And counting is displayed on a 16×2 LCD through the controller.

Abstract: In this project I have made an fire alarm system using Arduino. This sensing is based on parameters like humidity ,temperature, smoke etc...

Abstract: This project is Arduino digital clock without using real-time clock module. Simply if you need to calculate the real time you can buy a small real-time clock module and connect it to Arduino and get the real- time accurately.

But if your application is so simple and you need just to see the time then you can accept a small error and use Arduino to calculate the time in software. That"s what I have done in this project.

This design is based on Arduino UNO microcontroller automation control in agriculture. This kind of soil moisture control system helps to control the moisture level of the field and supply the water if required. In this, we have embedding a control system into an automatic water pump controller depends upon the moisture of the soil. Not only that this system helps to prevent wastage of water. This system is a design, which makes this self-sufficient, watering itself from a reservoir. Various pests can be detected automatically through the sensor so that we can avoid the crucial loss of livestock. In order to safeguard the field crops from the pests, the PIR sensor is used to detect the pests over a range. when the creature gets close enough to the PIR sensor, then the change in the IR energy might be just enough to trigger it. This technology is very promising for the early detection and monitoring of the agricultural fields.

Hardware: Arduino uno/pro/mini or custom board using Atmega 328p Microcontroller, 16x2 LCD (Liquid Crystal Display), 4x3 or4x4 matrix keypad for Arduino, servo motor,additional components for power supply of 1amp 5 volt mobile charger,jumper wires,nut bolts,plastic casing etc..

Abstract: Often times ,we need to secure a room at our home or office so that no one can access the room without our permission and ensure protection against theft or loss of our important accessories and assets. There are so many times of security systems present today but behind the scene for authentication they all relay on fingerprint , retina scanner, iris scanner, face id, tongue scanner, RFID reader, password, pin, patterns. Off all the solutions the low cost one is to use a password or pin- based system. so, in this project, I have built an Arduino Keypad Door Lock which can be mounted to any of your existing doors to secure them with a digital password. In this project I have used the default password as 1234...

Abstract: Piles of garbage are one of the major problems faced by most people in our country. Many times, in our city we see that the dumpsters placed in public places are overloaded. It creates unhygienic conditions for people as well as ugliness in that place leaving a bad smell and also leading to sanitary issues and disease. To avoid all such situations we are going to implement a project called “THE DUMP GAFFER USING IOT”. The proposed system consists of an ultrasonic sensor to measure the waste level, an ESP32 module that Controls the system operations, and an LCD 16x2 display to indicate the level of garbage in the dumpster. The update of the level of garbage pile is shown both on the LCD display and on the IoT platform which is connected to it, where here it is on Blynk IoT. It can also be able to generate a warning message to the municipality via Blynk IoT (or any cloud platform similar to it for more security) when the garbage bin is full or almost full, so the garbage can be collected immediately. The main aim of this project is to reduce human resources and efforts along with the enhancement of a smart city vision. Furthermore, it is expected to contribute to improving the efficiency of solid waste disposal management.

Abstract: The presence of hazardous LPG gas leakage and smoke due to fire, in a domestic, work place, also, stored gases container gas which exhibits ideal characteristic is use. For that sake, an alarm unit is used to vibrate an alarm which is buzzer. Buzzer gives an audible sign of the presence of LPG and smoke. The sensors are widely used to detect essence of propane, isobutane, LPG and smoke. The sensor has an advantage to combine a sensitivity response time. If the LPG sensor senses gas leak from work place or home, sensor output goes to active low (logic0) condit ion. Arduino UNO is used in the project; low signals are overlooked by the Arduino and gas leakage is been noticed by the Arduino. The Arduino UNO turns on the buzzer during emergency and can save human life.

Abstract: The system is developed using the Arduino board which incorporates the integration between sensors and GSM module and this system is used to monitoring the kids in the school. Whenever there is an occurrence of fire unexpectedly, the sensor will detect the fire and make a call to the safety system by creating an alarm. So, the kids are safety in the school.

Abstract: Many times we need to monitor the person/people visiting some place like Seminar hall, conference room or Shopping mall or temple. This project can be used to count and display the number of visitors entering inside any conference room or seminar hall. Visitor counting is simply a measurement of the visitor traffic entering and exiting conference rooms, malls, sports venues, etc. With the increase in standard of living, there is a sense of urgency for developing circuits that would ease the complexity of life. Over the years, the usage of Visitor counters has become very positive in terms of monitoring crowd behavior at a particular place. Now, due to technology advancement, various type of people counter has been introduced to automatically count the number of people entering and exiting a building at a particular time. Some of these are laser beam, thermal imaging, video camera and the infra-red sensor. All these sensors play their role respectively as visitor detector. These devices are very reliable and accurate in terms of performance as compared to the mechanical tally counter. This system is helpful for counting the number of people in an auditorium or halls for seminar to avoid congestion. Moreover it can also be used to check the number of people who have come to an event or a museum to watch a certain exhibit. This project presents the design and construction of a digital bidirectional visitor counter (DBVC). The DBVC is a reliable circuit that takes over the task of counting number of persons / visitors in the room very accurately.

Abstract: Automatic Room Lighting System is a microcontroller based project that automatically turn on or off the lights in a room. The aim of this project is to automatically turn on or off the lights in a room by detecting the human movement. We implemented this project using Arduino UNO Microcontroller and PIR motion sensors.

Hardware: (Please Publish this video to youtube if publishing instead of the previous one, I have made some changes (removed some personal information not to be shown)...Sorry for the inconvenience. Please use the other video for putting the marks. Thank you for understanding.) Arduino Board, Wires, Servo Motors, Buzzer (Piezo), Pushbutton, Keypad 4x4 (not a storage safe project)

In short, converting phone calls into braille, phone content into braille, and real-time surrounding talks to braille conversion, e-books and other text to braille, speaking through auto text-read by giving in user input letters or numbers, conversion of normal book text or newspaper text to braille, getting access to apps and communication services, for the deaf and the blind. This will help the disabled people use phones and do much more as it promises user interaction along with display output conversion through portable devices with costs of about 700 rupees.

In this project i had used ARDUINO UNO R3,KEYPAD,LCD,RESISTOR ,POTENTIOMETER, It has very simple construction and in future it can be turn to a helpful Project for students.

Our manuscript aims to develop a system which will lead to energy conservation and by doing so, we would be able to lighten few more homes. The proposed work is accomplished by using Arduino microcontroller and sensors that will control the electricity based on night and object"s detection. Meanwhile, a counter is set that will count the number of objects passed through the road. The beauty of the proposed work is that the wastage of unused electricity can be reduced, lifetime of the streetlights gets enhance because the lights do not stay ON during the whole night, and also helps to increase safety measurements. We are confident that the proposed idea will be beneficial in the future applications of microcontrollers and sensors etc.

Abstract: Arduino has been a boon for people who are not from the electronics background to build stuff easily. It has been a great prototyping tool or to try something cool, in this project we are going to build a small yet fun Piano using the Arduino. This piano is pretty much plain with just 8 push buttons and buzzer. It uses the tone() function of Arduino to create various types of piano notes on the speaker. To spice it up a bit we have added the recording feature in the project, this enables us to play a tune record it and play it again repeatedly when required. Sound interesting right!! So lets’ get building

Abstract: In this paper, we investigate the design of a water level sensor device that is able to detect and control the level of water in a certain water tank or a similar water storage system. The system firstly senses the amount of water available in the tank by the level detector part and then adjusts the state of the water pump in accordance to the water level information. This electronic design achieves automation through sequential logic implemented using a flip flop. A seven segment display and a relay-based motor pump driving circuit are part of this integrated design. The water pump automatically turns on and starts filling the tank when the water level is empty or level ONE and turned-off and stop filling the tank when water level reaches maximum-level NINE; furthermore, the water pump will remain in its standstill state from level EIGHT down to TWO when the level is decreasing due to water consumption

Abstract: Rapid advancement in scientific knowledge and growth in worldwide economic activities has led to a steep rise in the volume of vehicular activity for human and product mobility hence leading to more road constructions. Vehicular Movement controls in addition to controllers are, therefore, a critical necessity of the modern – day society. Toward this end, this paper is aimed toward the design of microcontroller-based traffic control device taking as a case study the complex layout and linkage among the service roads of the Senate building and College of Science and Technology, Covenant University, Nigeria. The Arduino platform is the microcontroller preference for this idea. Also, to make this idea more effective and productive, a Light Emitting Diode (LED) advertising displays has been incorporated into its implementation to take advantage of the red light wait time to disseminate useful information or facts

Abstract: Calving is a natural process which normally takes place without help. Close observation is required in case the cow has difficulties. During Calving, if cow or calf is dead then it will be one of the biggest economic losses for the farmers, also the farmers need long time continuous monitoring and it will be major burden task for labours especially in a large farm where has a large number of cows. So, I have proposed a low cost flexible calving detection system. This device will be connected at the tail of the cow because the tail movement accurately predict when the cow is likely to calve. Tilt sensor detects the tail movement orientation or inclination. This sensor data sends to arduino uno microcontroller. With this measurement, the buzzer will be turn on automatically to indicate before calving.

Abstract: This is an arduino based project, "Password Based Door Lock". First, a master password is set using the project code. Then, the keypad, LCD display and servo motor( door lock) are connected using the wires. Then the simulation is started. If the wrong password is entered, the program throws an error and the door remains locked. If the correct password is entered, the door opens and waits for sometime and automatically closes.

Hardware: Arduino UNO, Sensors(Photoresistor, Temperature sensor, Ultrasonic sensor, Gas sensor, PIR sensor, IR sensor, Force sensor, Flex sensor), Blub, DC Motor, Servo motor, Buzzer, LEDs, Gear motor

Hardware: Arduino Uno R3, LCD 16 x 2 , PIR Sensor , Photoresistor, Relay , Light bulb , Gas Sensor ,1 k? Resistor, 220 ? Resistor , Ultrasonic Distance Sensor , DC Motor , 5v Power Supply , Slide switch.

Abstract: The world is moving fastly towards automation. People have less time to handle any work so automation is simple way to handle any device or machine will work to our desire. This paper aim is to develop and design a Home automation using Arduino with Bluetooth module. Home automation system gives a simple and reliable technology with Android application. Home appliances like fan, Bulb, AC, automatic door lock are controlled by Home automation system using Arduino Uno with Bluetooth module. The paper mainly focuses on the monitor and control of smart home by Andorid phone and provide a security based smart home, when the people does not present at home. This paper motive is controlled home appliances in smart home with user friendly, design at low cost, simple installation.

Abstract: The Basic idea of this task is to control the speed of a DC motor with encoder with the use of Potentiometer. First of all we need a power supply for the DC motor to work. Then the value of potentiometer is given to the input to Operational amplifier where the amplification process occurs. Next the output of operational amplifier is given to the base of NPN transistor. Then the output from emitter is given to the input of DC motor. To rotate the DC motor we need a pulse width modulation waveform. So we get the inputs from digital pins from arduino. At last to display the value we need a LCD display.

An instrumented directive feedback device, more commonly referred to as a CPR feedback device, provides the student or healthcare provider with real-time feedback about the compression rate, depth, hand placement and chest recoil. As most of us working in health care training know, we sometimes have to rely on creating or hacking trainers to better suit the needs of the program and the learners. One of the newest projects is Arduino Powered CPR Feedback Device Monitoring System with Arduino. There are plenty of CPR feedback devices available on the market, some use a cell-phone, a portable device, or a CPR manikin with these features included. This project was not meant to create something entirely new but to evaluate more cost-effective ways to build upon existing trainers.

Abstract: This is a project is for rooms/halls where one needs to keep track of number of people. In this project, the PIR (in) will detect the motion i.e. the number of people entered a room and will keep a count of it and print it on LCD and the fan will turn ON automatically and the another PIR (out) will detect the number of people left the room/hall and will deduct from the count and print it on LCD too i.e. number of people left inside the room and will take the readings till "0" members are present inside the room and the fan will turn OFF automatically.

Abstract: Covid entry kit would check wether a person is there or not anf if he is present the santizier would be droped down by the help of Servo Motor and after sanitation the person should check his temperature and this temperature should be viewd in lcd display and finally the buzzer says the process is completed.

Abstract: Alcohol detectors are commonly required by the law enforcement. The police need to catch and check people who drive after taking alcohol. Driving after taking alcohol can result in serious accidents. People who drive after consuming alcohol not only risk their own life but also of others. That is why police need to remain alerted and verify any person who they found suspicious of driving after drinking. For the verification, they use an instrument called alcohol detector. This project is aimed at building a similar device which will detect the consumption of alcohol by a suspect and display a digital reading indicating the level of alcoholic consumption. The device will also have a dial which will rotate and an LED indicator which glows to indicate a dangerous level of consumption by a suspect.

Abstract: ABOUT THIS PROGRAM: In this fun DIY project, I will show you how to make an Arduino based Piano. It is a simple project made using Arduino UNO, few push buttons and a Piezo Buzzer. A special feature of this project is that Arduino will record the last played set of tones and repeat those tones like a one time record and repeat feature.

The Arduino based Piano project comes under the category of fun projects as you know, this project doesn’t have any real world applications (at least not directly) but can be used to understand certain features of Arduino (like its sound producing capabilities using the tone () function)

Make the connections as per the circuit diagram and upload the code to Arduino. Once the power to the circuit is turned on, Arduino is ready to accept the input from the buttons.

Now for the record and repeat mode, play a few tones using different buttons. With each button pressed, Arduino starts recording i.e. makes note of the sequence of the buttons, its on time and off time.

Once you are done with the tone, you can push the Interrupt Button. As soon as the Arduino enters Interrupt Mode, all the previously pressed tones are played back through the Piezo Buzzer.

An important point to understand here is that I did not use the tone() function of Arduino. You can try to generate sounds of different frequencies using that function

A fun DIY Project called Arduino based Piano is implemented here. This project can be helpful in understanding the sound capabilities of Arduino. Although I haven’t used the tone () function, you can implement the same using that function for more accurate results

For that here is a solution in form of 4-channel touchless switchboard. Arduino Uno R3 as main part of this project supported by Four ultrasonic sensors and relay modules provides a simple solution. The switches can be turned on and off by just placing our hand before or at a particular distance from ultrasonic sensor.

The sensors are easily interfaced with Arduino Uno when a place is placed for say less than 30cm from the sensor the program in the arduino reads signal and switch on the relay which turn on the particular load connected with it. When the hand is again placed near sensor arduino reads signal and turns off the relay(load).Similar action can be performed with all other sensors and loads

Abstract: Solar panel tracker is used to vary the direction of the solar panel according to the direction of the sun . Here arduino uno board is used for getting inputs from LDR sensor and potentiometer and display output in LCD display and change the position of the servo motor gear system . The main objective is to we need to fix the solar panel perpendicular to the sun . that time only the max amount of solar beams directly hit on the solar panel and produce more electricity. In order to do that we need to check the top and bottom of the solar panel are having the same amount of temperature of not. and also we need to check the left and right side to confirm the solar panel is fix perpendicular to the solar beams. I have used Up-down gear system to vary the slope in Y direction and Left-Right gear system to vary the slope in X direction based upon the values of LDR sensor.

Hardware: Arduino Board,16*2 LCD Display, Smoke detector MQ6, PIR, LDR, Ultrasonic, DC power source(12V), Relay board of 2 channel, resistors, switch, photoresistor

Abstract: The designed circuit is home automation. The components required for this circuit are Arduino Uno R3 board, 16*2 LCD Display, smoke detector MQ6, PIR, LDR, Ultrasonic, DC power source(12V), Relay board of 2 channel, resistors, switch, photoresistor. A smoke detector(MQ6) is an electronic fire-protection device that automatically senses the presence of smoke, as a key indication of fire, and sounds a warning to building occupants. Commercial and industrial smoke detectors issue a signal to a fire alarm control panel as part of a building"s central fire alarm system. A passive infrared (PIR) sensor measures infrared light emitted from objects that generate heat, and therefore infrared radiation, in its field of view. Crystalline material at the center of a rectangle on the face of the sensor detects the infrared radiation.

The sensors connected to the microcontroller board are Smoke Detector, PIR, Ultrasonic and LDR sensor. Smoke detector is used to sense the Gas if it leakage . The data sensed by the sensors are then if gas is leaked the Alarm circuit is active. The gas sensor will detect the level of leakage gas and show message according to that to display e.g. Low, Med, High and if the intensity is very high then it shows the Exit message on display. The LDR / PHOTORESISTOR works on intensity of light at night bulb is automatically turned ON and At the day bulb is Turned OFF. The Ultrasonic used for automatic open the front door if some someone is in front of the door. The PIR is used for detection of human and turn ON the lamp. Also the lamp is controlled by manually. LDR is used for automatic light control in home if someone is in home at night the bulb is automatically turned ON and at dey time it automatically turned OFF.

Abstract: Generating music using Arduino is an interesting thing. Moreover designing the musical keys circuit using Arduino is very much interesting. We can generate various musical notes using this circuit. This project can be considered as a mini piano with eight push buttons. The connections are carried out using the required components. The circuit functions as per the code written. So finally as an output during circuit simulation when each push button is pressed individually then musical notes of different frequencies will be produced from the buzzer.

For this Contest, I have designed one math game named "LETS SOLVE IT". Here i have used some hardwares like Arduino UNO, keypad, LCD Display(16x2),Potentiometer(10k?), Resistor(220?), LCD, Buzzer, Breadboard Mini. This project was made in TinkerCAD. Tinkercad is a free online collection of software tools that help people all over the world think, create and make.

First Of all, i would like to explain about the works of these hardwares in my project. Arduino is an open-source electronics platform based on easy-to-use hardware and software. Here, Keypads allows users to input data while game is running. After receiving an input from keypad, Arduino will process with the use of given code and deliver as an output in the LCD Display. The buzzer produces sound based on reverse of the piezoelectric effect.

After read the instructions which are given through bullet point, press the green colour Simulate bar which is located in Right-Top Corner in the TinkerCAD web page. Now We have to Wait for a seconds to playing game. After getting output like "Press to Start" in LCD panel, we need to press any of the number key to start the game. Now questions will be display in the LCD panel. We should enter the answer for that question using keypad. Here, for -ve we need to press * and we need to press # to submit the answer. You will hear sound, whenever we pressing button in keypad with the use of Buzzer. You have to enter answer within 40 seconds. After completing all the questions correctly, You will see "congratulations" and "Game Completed" in the LCD Display.

Abstract: In this current world, technologies are improving day by day. There is some technology for dump people but I don"t think it could not help them more to communicate to others. So, I made a " Sign Language Translator ". It will be more useful for them to communicate to other person. It could be done with the help of flex sensor. With this sensor the person can easily narrate/communicate the things what they want or what they want to ask and talk. The dump person bent the finger, the flex sensor also will be bent that time arduino fetch the data from the flex sensor and it will be shown on the LCD screen, before doing this process, some code and values should be registered then only it recognize the actions of each finger. It will explained detailed manner in the video.

Abstract: Hi everyone, VIKRAM M. I have created a circuit called LCD Digital Thermometer with Arduino. In this circuit I have used Arduino UNO, Breadboard, Potentiometer, Resistor, Temperature Sensor, LCD Display as hardware. Thanks for giving this opportunity.

Abstract: In the modern era, everything turns out to be virtual instruments in this regard the discernibly popular music instrument Piano turns out to be a virtual instrument. This project is based on Virtual piano which helps piano lovers to learn basics before buying the original one. To develop a virtual simple piano here Arduino and piezo are utilized. Unlike other pianos, this one will have only 8 basic notes: ‘c’ ,‘d’, ‘e’, ‘f’, ‘g’, ‘a’, ‘b’, ‘C’. For making those basic notes, 8 buttons are needed, one for every note and 8 Resistors for each button along with 10 Cables. They are organized in a way that when you press any of the button, you will hear the sound within frequency creation from the piezo. The codes of Arduino reads the signals from the buttons and it creates a frequency to produce sound with the piezo.

Abstract: Nowadays Calculators plays a vital role everywhere. Even for a small calculations we seek for it. So here is a simple Calculator designed using Tinkercad Software. Here in this project is the calculator takes input from a user in real-time via a keypad and displays output on a LCD display module, the control, arithmetic algorithm and calculation functions are performed using a Arduino UNO R3. The prototype of the system is configured and the simulation results for basic mathematical functions of calculator are expressed with the help of Tinkercad Software.

Abstract: Hello everyone, I am VISWAA U, I have created a circuit called Digital Clock Using Arduino. In this circuit I have used Arduino UNO , Display LCD , Resistor , Push button as hard wares. Thanks for this wonderful opportunity

Abstract: Hello Everyone! I am Santhosh from Bannari Amman Institute of Technology. I have created a circuit called LCD Digital Thermometer with Arduino. In this circuit i have used hardware like Arduino UNO, Temperature Sensor, Potentiometer, Resistor, LCD, Breadboard Mini. Thanks for the Opportunity!

Abstract: This project is about the simple women safety device developed using Arduino Uno. Women are the backbone of any economy primarily shaping future of the country. She who earlier stayed at home to attend her domestic duties is now maintaining work and home simultaneously, participating in the process of economic development on an equal footing with men. In critical situations the women will not feel insecure or helpless if they have a safety device with them. Such a safety device is developed in this project. This basically consists of two parts:

Women safety device is always with the user(women) and has two buttons corresponding to Red and green LEDs. Red LED is used to indicate danger and green LED is used to indicate danger. The status of women safety is conveyed to her parents and friends through SMS which in this case is shown by the LCD screen corresponding to Parents and Friends screen. When device is turned on, green LED is glowing to indicate women is safe and sound. When women feels insecure and in danger, she presses red LED button and a loud noise heard to alert the people around her and try to save that women from danger. When women feels insecure and presses red LED button and later finds that it was her misconception, she has to press the green LED button for certain number of times depending on choice to turn on green LED and turn off both red LED and the buzzer. This is make sure that she is actually safe and has enough time the press the green button for certain number of times and not one time. In nutshell, this project has a very scope in real hardware implementation and ensure safety of women.

Abstract: First take the Arduino UNO R3 and breadboard. Then connect the positive terminal in 5V and negative terminal with GND. Take the resistor and Slidswitch. Connect the one end of the resistor with the first terminal of the slideswitch, the another end of the resistor should be connected with the negative terminal of the breadboard, second terminal of the slideswitch should be connected to the Arduino in 13V, third terminal of the slideswitch is connected with positive terminal of the breadboard. Take 4 DC Motors, connect the positive terminal of the DC Motor 1 Arduino 2V and the negative terminal is connected with positive terminal of the breadboard. positive terminal of the DC Motor 2 is Arduino in -5V AND Negative terminal is connected with positive terminal of the breadboard. Positive terminal of the DC Motor 3 is connected with positive terminal of the breadboard and negative terminal is connected with Arduino in 4V. The positive terminal of the DC Motor 4 is connected with Arduino in -3V negative terminal is connected with the positive terminal of the breadboard

help of RADAR SYSTEM which uses electromagnetic waves for detection of different physical components such as distance, speed, position, range, direction, size etc which can be either fired or be in motion. Use of radar system has been developed greatly specially in field of navigation. In this research we study about existing navigation technologies and proposed an Arduino based radar system. It has advantage over other radar system as kit reduces power consumption and connect programmer to wide range or Arduino programmers and open source code. in this project, I have designed a simple radar system using Arduino and ultrasonic sensor. The system consist a basic ultrasonic sensor placed upon a servo motor which rotates at a certain angle and speed. This ultrasonic sensor is connected to Arduino digital input output pins and servo motor also connected to digital input output pins. Finally the output can be observed in the serial monitor.

Abstract: Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss of our important accessories and assets. There are so many types of security systems present today but behind the scene, for authentication they all relay on fingerprint, retina scanner, iris scanner, face id, tongue scanner, RFID reader, password, pin, patterns, etc. Off all the solutions the low-cost one is to use a password or pin-based system. So, in this project, I have built an Arduino Keypad Door Lock which can be mounted to any of your existing doors to secure them with a digital password.

Abstract: The project describes ultrasonic blind walking sticks with the use of Arduino uno. According to the World Health Organization (WHO), 30 million people are permanently blind and 2.85 million people with vision impairment. If you notice them, you can very well know that they can’t walk without the help of others. One has to ask guidance to reach their destination. They have to face more struggles in their daily life. Using this blind stick, a person can walk more confidently. This stick detects the object in front of the person and gives a response to the user either by vibrating or through command. So, the person can walk without any fear. This device will be the best solution to overcome their difficulties. We are going to upgrade the project by increasing its application. In this project, we are going to use two ultrasonic sensors. So now, this smart stick will have an ultrasonic sensor to sense distance from any obstacle and a RF remote using which the blind man could remotely locate his stick.

It is a simple project by using TINKER CAD software. The aim is to detect sense motion with the help of pir sensor. The Arduino is used. The piezo buzzer is used to make noise and bulb to produce light, to indicate the sense of motion. The simple arduino code is given. In short words, if the object is moved in front of PIR sensor sound and light can be identified.

Based on the ultrasonic sensor detection, the LCD will display the number of slots occupied or unoccupied by the vehicle. So the user can easily find the parking slot available for them.

Abstract: This digital thermometer is used to check the body temperature. For that I have used TMP36 temperature sensor which provide accurate temperature in centigrade, LCD (16*2) is used to display the readying.

Hardware: Hardware : Arduino uno R3, Breadboard, Micro Servo, Ultrasonic Distance sensor (right,left), Piezo, oscilloscope, Dc motor, Potentiometer, Light bulb, slide switches, LED, Photoresistor, Resistor

Hardware: Arduino Uno, pushbutton switches, Adafruit standard 16×2 LCD, breadboard, Adafruit round force-sensitive resistor, LED, rotary potentiometer, alligator clips, jumper wires, Adafruit Perma-Proto half-sized breadboard

Abstract: CPR is a critical, life-saving skill that requires practice to perfect. This Tinkercad project adds real-time feedback to a CPR mannequin and includes a depth and chest recoil indicator as well as a CPR cycle counter. The feedback offered in this project can aid in the learning process.

While such devices can be bought in store, this project aims to reduce the cost involved. It uses simple components such as LEDs and a 16×2 LCD screen for visual feedback. These, as well as the other components, are connected together with a breadboard, alligator clips, and inexpensive jumper wires. Finally, the “brain” of the project is an Arduino Uno.

Abstract: Introduction: Are you also bored in this lockdown time because you don’t have any component to make or create something which is useful for our society in this pandemic time. So, don’t worry Tinkercad is everywhere which gives you the facility is free to create or test any project or circuit.

So, in this project we are creating a COVID-19 Human Detector using Arduino, 16x2 LCD, Potentiometer, PIR Sensor & Buzzer in Tinkercad. The PIR or Passive Infrared Sensor is a digital sensor which detects the movement of infrared lights from Humans & Animals. If any infrared light is detected by the PIR sensor then the buzzer will beep and it shows the status on LCD that there is any human or not.

So, by using this circuit you can create an automated sanitize chamber or a machine to detect that there is any human or not from 7-8 m of distance. So, let’s get started by gathering the components for this project in Tinkercad.

Abstract: Smart traffic lights or Intelligent traffic lights using Arduino are a vehicle traffic control system that combines traditional traffic lights with an array of sensors and artificial intelligence to intelligently route vehicle and pedestrian traffic. They can form part of a bigger intelligent transport system. Here two PIR sensors are used which plays the main role.

Abstract: As we all in a Pandemic situation... A device which helps us to maintain social distancing: To make a social distancing alarm I"m using Arduino Uno, Ultrasonic sensor, Piezo, and Neo-Pixel Ring 12, Breadboard Mini. An ultrasonic sensor that has an Echo pin. Ultrasonic sensors send waves. These waves are absolutely invisible and come back after hitting an optical. The Trig pin activates. In which we have connected lights and Buzzer. We have kept a minimum of distance of 100 and maximum of 300. You can increase this parameter by modifying the code. Thanks for the Opportunity!

The Gas Detection Alarm System is the process of detecting the hazardous gases or smokes by means of sensors. These sensors usually employ an audible alarm to alert the people when a dangerous gas has been detected. Here the Arduino Uno board are able to read the inputs - Signals of a sensor and turn it into an output - turning on an LED. The Gas sensor is detecting the gases or smoke when it is close (i. e) the concentration is greater than the specified threshold value. If any gases or smokes detected by the gas sensor, the buzzer alarm gets turned ON, the ALERT and EVACUATE displays in 16x2 LCD and the Red Led will glow. If the gases or smoke is away, it will displays SAFE and ALL CLEAR message in 16x2 LCD and the Green Led gets turned ON. This Gas Detection Alarm System using Arduino can be implemented at a large scale for various Gas industries, Municipal Gas distribution, Nuclear power stations. This system can be helpful in reducing the accidents caused by gas leakage in households for security purposes.

Hardware: U11Arduino Uno R3 U21LCD 16 x 2 PING21Ultrasonic Distance Sensor U41Temperature Sensor [TMP36] SERVO21Positional Micro Servo PIR1125.082003945612882 , -192.16762867653642 , -230.15993820208098 PIR Sensor D1 D22Red LED D3 D42Green LED D5 D62Blue LED M11DC Motor R1 R22220 ? Resistor U51H-bridge Motor Driver R311 k? Resistor Rpot11250 k? Potentiometer

Abstract: This project is about simulating a relay-activated bulb built using Arduino for the automation of lights. The automation of light is achieved by monitoring the light intensity of the place we need to lighten up. The light intensity is measured with the help of a photo-resistor(LDR) used here. The photo-resistor changes its resistance based on the light intensity falling on it. The resistor of the LDR and light intensity holds an inverse relation. The bulb usually requires high voltage (the bulb used in this project is operable safely upto 12V DC). The Arduino or any similar can output a maximum of 5V. Here the relay comes as a savior to operate the bulb at its required voltage. The SPDT relay is used here. The LDR value is sensed and monitored with the help of an Arduino analog pin.The threshold value is set and the relay is activated with the help of a digital pin in Arduino and the loop programmed in Arduino. This circuit is used in home lights automation, farm lights automation, and so on.

Abstract: This project is about simulating the LED chaser circuit built using two popular IC’s 555 and 4017. IC 555 is the timer IC and 4017 is the decade counter IC. The IC 555 will produce the square wave output which would act as the clock pulse for IC 4017. The IC 555 is configured in Astable mode. For each pulse given to the 4017, it starts counting in the upward direction for each pulse and the corresponding LED gets lighten up and follows the preceding output pins’ LED as count goes on. The duration of the LED glow is adjusted with the help of a potentiometer used in the IC 555 part of the circuit. In a short duration of time LEDs are being on and off forming the chasing pattern. The same output can be achieved with the help of Arduino and lines of codes dumped in it. But that is not needed for this simple application and would cost more than using conventional IC’S. By modifying the circuit in an appropriate manner, we can even control the lights working on the AC mains. This circuit is used as Decorative lights in public places and home decorative items .

Abstract: Morse code can be transmitted in different ways: originally as electrical pulses along a telegraph wire, but also as an audio tone, a radio signal, light, body language, frequency and more. Imagine the dot as a unit of time, then the dash is three units of time, the distance between the parts of a letter is a unit of time, the distance between two consecutive letters is three units of time, and the distance between the words is seven units of time. Remembering Morse code and converting texts to this code is a time consuming process, so let’s make a translator to convert texts to Morse code.Here we used Arduino UNO to translate a text to Morse code. Upload the Morse encoding code to Arduino board. Type your desired word or text as the input and receive it"s Morse code, which will give the required output by means of light(on- off ) and sound.since the output by LED is on-off system, it can further be developed under LI-FI technology for secured communication among people.

Abstract: If the temperature raises the voltage of temperature sensor raises. A gas sensor detects the presence of gases in the atmosphere. The gas sensor also used to detect the smoke in ppm which can be converted into digital machine using the inbuilt tool digital analog of arduino.

Abstract: Our government instructed us stay home and stay safe due to the pandemic situation (Covid-19 virus). We should stay safe in our house but the important needs should be done like buying milk, vegetables etc…. We can’t manage to live without the important needs, so it essential to buy our needs. But when we go outside we will be careful but some of them won’t obey the government rules and interacting with the people in closer way. We can’t know that the people are coming to us. So we designed a prototype, in which a person is coming closer to us it will give alarm so that we can infer that someone is coming closer to us. In that we have used PIR sensor, which will indicate the presence of a stranger coming closer to us. A Piezo is used which will give the alarm sound. And the sensor and pie