wireless lcd display via bluetooth free sample

Circuit diagram of the wireless LCD display via Bluetooth is shown in Fig. 1. It is built around Arduino Uno board along with a 16×2 alphanumeric LCD (LCD1), Bluetooth module (HC-05) and a preset (VR1).

HC-05 Bluetooth module has six pins out of which four (Vcc, GND, Rx and Tx) are used in this project. Power supply for the circuit can be from an adaptor (12V, 1A) or USB.

Arduino IDE is used for programming Arduino board. LCD’s library (#include ) is used, which is already available in the latest IDE’s library. Here, the baud rate or speed of serial communication is set to 9600. For serial communication, inbuilt functions such as serial.begin(), serial.available() and serial.readString() are used.

The PCB layout for the wireless LCD display is shown in Fig. 2 and its components layout in Fig. 3. After connecting the circuit on the PCB, follow the steps given below to test the project:

2. Open Arduino IDE. Select COM port from your computer’s Device Manager. Set baud rate to 9600. Compile and upload the code (LCD.ino) to Arduino board.

3. Connect the 12V power supply to the Arduino board. The LED in HC-05 Bluetooth module will blink continuously. This means Bluetooth module is working fine. The LCD will display ‘Welcome’ message. If not, adjust the preset by varying VR1 till you get clear text on LCD1.

4. Pair HC-05 module with your smartphone’s Bluetooth using 1234 as password. After getting paired, the LED on HC-05 module will blink intermittently instead of blinking continuously.

5. Open Bluetooth Terminal and pair it with HC-05 module. You will see ‘Connected’ on the app. Type a message and press Send. The message will get displayed on LCD1.

This is the era of wireless communication/technology. We can see the rise in number of devices that are using Bluetooth and WiFi these days. With the IoT revolution in the electronics industry as well as the ever increasing devices that needed the internet connectivity we had to shift to IPv6 from IPv4.

With these technological advances we are forgetting about some simpler and older radio frequency devices and schemes. More and more people are publishing sophisticated projects which use IoT, Lora-WAN and stuff even when it is not required in that project. A small project doesn"t need such powerful wireless technology. It is a waste of resources.

Let"s learn more about ASK. As I have mentioned earlier that ASK is a digital modulation technique, means it can be used to transmit digital data wirelessly over a carrier of 433 MHz. The carrier is a sine wave of 433MHz which is switched on or off depending upon the digital bit that is to be transmitted. In this way by switching the carrier on and off one can transmit 0 or 1 respectively.

1.NEW DESIGN:The first Bluetooth receiver with a LCD display screen has come. You can have all the information of the wireless streaming status from a simple glance at the screen. It shows Bluetooth connection status.

2.BLUETOOTH 5. 0 RECEIVER: Installed with Bluetooth 5. 0 chip, VAOLRO new wireless music receiver has an unrivalled performance with 2 times faster transmission speed, stronger connection stability and wider signal range of 10M than the older version.

3.BLUETOOTH COMPATIBLE: This audio Bluetooth adapter support 3.5mm aux audio, and also compatible with all smartphones, bluetooth audio devices (Bluetooth headphones, Bluetooth speakers and much more).

4.TRANSMITTER RECEIVER MODE:2in1 design, by using this wireless adapter, you can send and receive all of the audio freely and easily. Transmitter enables your TV, AV Receiver, Radio and other home audio source devices to stream music to your Bluetooth headphones or speakers; Receiver lets non-Bluetooth devices like your home stereo or AV Receiver and wirelessly stream music from your cellphone/PC.

5.CLEAR SOUND:A2DP support voice prompts, gets high-quality audio sound, offers you 30 feet operation range with good performance, gives you a good experience when answering the phone or watching late-night shows. In order to get clear sound, we recommend NOT using the 3.5mm Bluetooth transmitter-receiver while charging.

6.WIRELESS FUNCTION:Want to watch football/baseball / Boxing / Golf / NBA game late at night without waking anyone up? This is a great chose for you. Bluetooth transmitter function wirelessly streams audio to Bluetooth speakers or headphones from your TV or older media devices like portable CD players that lack built-in Bluetooth.

The ESP32 comes with Wi-Fi, Bluetooth Low Energy and Bluetooth Classic. In this tutorial, you’ll learn how to use ESP32 Bluetooth Classic with Arduino IDE to exchange data between an ESP32 and an Android smartphone.

At the moment, using Bluetooth Classic is much more simpler than Bluetooth Low Energy. If you’ve already programmed an Arduino with a Bluetooth module like the HC-06, this is very similar. It uses the standard serial protocol and functions.

Initialize the Bluetooth serial device and pass as an argument the Bluetooth Device name. By default it’s called ESP32test but you can rename it and give it a unique name.

In the first if statement, we check if there are bytes being received in the serial port. If there are, send that information via Bluetooth to the connected device.

The next if statement, checks if there are bytes available to read in the Bluetooth Serial port. If there are, we’ll write those bytes in the Serial Monitor.

Click the settings icon, and select Pair new device. You should get a list with the available Bluetooth devices, including the ESP32test. Pair with the ESP32test.

Now that you know how to exchange data using Bluetooth Serial, you can modify the previous sketch to make something useful. For example, control the ESP32 outputs when you receive a certain message, or send data to your smartphone like sensor readings.

Start by including the necessary libraries. The BluetoothSerial library for Bluetooth, and the OneWire and DallasTemperature for the DS18B20 temperature sensor.

The next if statement reads incoming messages. When you receive messages via serial, you receive a character at a time. You know that the message ended, when you receive \n.

The ESP32 touch sensor development kit, ESP32-Sense Kit, is used for evaluating and developing ESP32 touch sensor system. ESP32-Sense Kit consists of one motherboard and multiple daughterboards. The motherboard contains a display unit, a main control unit and a debug unit. The daughterboards have touch electrodes in different combinations or shapes, such as linear slider, wheel slider, matrix buttons and spring buttons, depending on the application scenarios. Users can design and add their own daughterboards for special usage cases.

ESP-WROOM-32 based development board with SH1106 OLED display (128×64 pixels), RJ-45 Ethernet connector, CAN-bus connector, Micro USB connector, USB-to-UART bridge, LiPo battery connector and charging circuit.

ESP32 development board with ePaper display, TI PCM5102A DAC, ICS43434 MEMS Microphone, CP2102N USB-to-UART bridge, microSD card slot, and LiPo charger.

SPI0 is permanently reserved for cache access to the flash chip. SPI1 is connected to the same pins via an arbiter and is used to write to flash. You can use SPI1 to also write to other peripherals connected in parallel with the flash (but with another /CS), however, this is tricky to implement because it means you can"t simultaneously access flash anymore. Thats why it"s not in the driver yet.

Bluetooth is one of the most popular and easy to use wireless technology. Over the few years there have been many upgrades of Bluetooth standard to keep pace with the current ongoing technology with future technology and to satisfy needs of users. Starting from the Bluetooth version 1.0 to Bluetooth version 5.0, there are many things changed including higher data rates, the ability to be used for IoT with low current consumption, improved security, etc. To learn Bluetooth communication there are many modules available which can be interfaced with microcontrollers. Such a Bluetooth module is HM10 which is based on Bluetooth 4.0.

The HM10 is a serial BLE module (Bluetooth-Low-Energy) which is intended to use for the low power consumption applications and can last long even with a coin-sized battery. The HM10 is a Bluetooth 4.0 modulebased on the Texas Instruments CC2540 or CC2541 BLE System SoC (System on Chip). The firmware and design of the module is made and managed by Jinan Huamao Technology. The module comes with serial/UART layer which makes the device to be able to interface with different microcontrollers. The HM10 is ideal for creating simple connections and using it with or as an iBeacon.

The HM10 has become a very popular Bluetooth 4.0 BLE module. The HM10 is a Bluetooth 4.0 based module only, so it will not connect with Bluetooth 2/2.1 module such as HC-05, HC-06 and other Bluetooth modules. The HM10 is controlled via AT commands sent over the serial UART connection. HM-10 is a Bluetooth Low Energy (BLE) module, to know more about BLE follow the link. Also learn how an nRF24L01 module can be used as BLE module with Arduino.

The major difference HM10 possess is the Bluetooth Version. The HM10 is Bluetooth 4.0 module, so it comes with all Bluetooth Version 4.0 features such as speed, throughput and range. The HM10 offers a data rate of up to 24 Mbps with low-energy/low-power consumption. Along with this the HM10 offers a distance range of 100 meters in open space. Compare to other Bluetooth modules such as HC-05 which is a Bluetooth 2.0 based module, the HM10 certainly performs better than the HC-05. The HC-05 only offers 3 Mbps compared to HM10 which is quite less.

Bluetooth module HC-05 and HC-06 are still very popular among makers and hobbyists as they are cheap and easy to interface. We also made many projects using HC-05/06 and interfaced them with many other microcontrollers:

Today we will interface HM-10 BLE Module with Arduino Uno to control an LED wirelessly using Bluetooth protocol. The On/Off commands will be sent by Smartphone.

The Arduino Bluetooth Controller (HM-10 Module) is an android application which is available free on Google Play Store. This app is having easy and simple interface for HM-10 BLE Module. While testing, it was able to find HM-10 quickly and it connected instantly with HM-10. The app has some cool feature like you can create a button and customize it with custom name and functions. Here we will how to create two buttons in this Bluetooth controller app to turn on and off the LED connected with Arduino.

In this lesson, you will learn how to control an LED light connected to an Arduino using a smartphone app and a Bluetooth connection. This tutorial involves using the HM-10 BLE Bluetooth 4.0 module and an iOS app for iPhone, however you can also get this to work with an Android app. We will use a free app for testing the Bluetooth connection, however there are a range of apps available for communicating with an Arduino via Bluetooth and you can even make your own app.

Wire up the project using jumper wires by following these instructions and the circuit diagram shown below.Connect VCC on Bluetooth module to 3.3V pin on Arduino Uno via a breadboard

Create a new sketch in the Arduino IDE software and use the following code. Then upload the sketch to your Arduino board. The code on the Arduino checks if a Bluetooth connection exists and then reads commands sent from the smartphone app. In this example, we will send a “1” message from the app to turn the LED on and a “0” message to turn it off. Scroll down the page for the second example code which can receive a range of different string commands eg. “on”, “off”, etc.

To connect your Android or iOS mobile device to the Arduino you will need to download a free app (or you could also make your own app) that can connect to the HM-10 Bluetooth module and send commands. You can search your device’s app store to find a free app that will work for this project but for this example we will use the free Bluetooth Terminal app on iOS.

Tip: If you search the iOS App Store or Google Play app store using the keywords “bluetooth arduino” or “bluetooth hm-10” you should be able to find a suitable app.

Step 4 - Using the on-screen keypad, you can enter different decimal values. Enter 1 and tap the Send button. The LED light should turn on. Enter 0 and tap the Send button. The LED should then turn off. If you don’t see anything happen, click Tools > Serial Monitor in the Arduino IDE and then set the baud date to 9600 bauds. Check if any input is being received and displayed in the serial monitor when you send the 0 or 1 commands to the Arduino from the app.

In the example code above, we were limited to sending 0 or 1 commands only. In this example code, the Arduino can receive string commands from a smartphone app via Bluetooth. This means we can specify a wider range of different commands eg “on” and “off” to control an LED light, or specify different colours for an RGB LED, or “forward”, “backward”, “left”, and “right” to control a car. This code makes the Arduino wait for a Bluetooth connection. Once a Bluetooth connection is established, it will receive commands and check if it has received a certain string command.

You can use Bluetooth to control other projects such as a robot or car. You can also try receiving data from the Arduino – eg. send sensor readings to your smartphone.

There are several different Bluetooth modules that should work with this tutorial. The one used in this project was purchased on eBay and is called “HM-10 CC2540 CC2541 BLE Bluetooth 4.0 Wireless Module“.

5.1CH Surround Sound Input Support Bluetooth TV Transmitter with LCD Screen Display, Soundbar & Stereo Simultaneous Output, Class 1 Long Range, aptX Low Latency, Connect to Two Headphones

The large LCD screen makes connecting wireless headphones, soundbars, and speakers simple. The display shows all Bluetooth equipment available, taking the guesswork out of pairing. The intuitive interface also shows the audio CODEC, TV signal validity, and more to help you manage your headphones or speakers. With all this information at your fingertips, setup has never been easier.

The Avantree Orbit Bluetooth TV transmitter includes Optical, AUX, RCA cables that make it compatible with TVs having a working audio output jack. What makes it unique and able to work with ANY TV is the MIC-input feature. Some TVs do not have a suitable audio output port available, and mounted TV ports can be hard to reach. In both of these situations, the Mic-input feature has you covered and makes Orbit the perfect Bluetooth transmitter for non-smart and smart TV brands like Vizio, Samsung, LG, Sony, TCL, Phillips, Hisense, Sharp, Toshiba, and arguably better than anything built into your TV.

Certified Qualcomm aptX Low Latency and FastStream CODEC support deliver <40 ms audio latency.¹ Typical solutions in the market can have audio latency over 100MS or more which causes the notorious "Bluetooth audio lag" experience where the images on the TV and the audio are off. Orbit’s low latency performance means perfectly synchronized visual & audio no matter what you"re watching.

The Orbit Bluetooth TV transmitter features automatic 5.1 audio decoding; no need for you to make audio setting adjustments on your TV, the Orbit will automatically convert the 5.1 signals into 2.0 stereo channel so that they can be transferred wirelessly into your headphones via Bluetooth.

Dual Link lets you connect up to two wireless headphones. Perfect for family settings where one or two individuals have hearing issues or when you don’t want to disturb anyone around you. By connecting two compatible Avantree headphones, both will operate at low latency.² Other transmitters on the market that support two headphones only allow one headphone to function as low latency.

Equipped with the highest Bluetooth range, Class 1, and running Bluetooth version 5.0 ensures stable & reliable connectivity up to 164 ft (50 m).³ Need to start making dinner or grab a drink from the fridge? No problem, move around the house and do what you need to do without worrying about your audio cutting out.

5.1CH Surround Sound Input Support Bluetooth TV Transmitter with LCD Screen Display, Soundbar & Stereo Simultaneous Output, Class 1 Long Range, aptX Low Latency, Connect to Two Headphones