ecran lcd module i2c brands

An LCD display that can display a max of 16x2 charactors. with the help of the I2C bus convertor and related libraried, you can easily use this module with just 2 wires.

There is a great tutorial on Adafruit Learn, follow the instructions for the 128x32 I2C Display. It is surprising how easy it is to work with this module.

LCD screens are useful and found in many parts of our life. At the train station, parking meter, vending machines communicating brief messages on how we interact with the machine they are connected to. LCD screens are a fun way to communicate information in Raspberry Pi Pico projects and other Raspberry Pi Projects. They have a big bright screen which can display text, numbers and characters across a 16 x 2 screen. The 16 refers to 16 characters across the screen, and the 2 represents the number of rows we have. We can get LCD screens with 20x2, 20x4 and many other configurations, but 16x2 is the most common.

In this tutorial, we will learn how to connect an LCD screen, an HD44780, to a Raspberry Pi Pico via the I2C interface using the attached I2C backpack, then we will install a MicroPython library via the Thonny editor and learn how to use it to write text to the display, control the cursor and the backlight.

2. Import four librariesof pre-written code. The first two are from the Machine library and they enable us to use I2C and GPIO pins. Next we import the sleep function from Time enabling us to pause the code. Finally we import the I2C library to interact with the LCD screen.from machine import I2C, Pin

3. Create an objecti2c to communicate with the LCD screen over the I2C protocol. Here we are using I2C channel 0, which maps SDA to GP0 and SCL to GP1.i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)

4. Create a variableI2C_ADDR,which will store the first I2C address found when we scan the bus. As we only have one I2C device connected, we only need to see the first [0] address returned in the scan.I2C_ADDR = i2c.scan()[0]

5. Create an objectlcdto set up the I2C connection for the library. It tells the library what I2C pins we are using, set via the i2c object, the address of our screen, set via I2C_ADDRand finally it sets that we have a screen with two rows and 16 columns.lcd = I2cLcd(i2c, I2C_ADDR, 2, 16)

6. Create a loopto continually run the code, the first line in the loop will print the I2C address of our display to Thonny’s Python Shell.while True:

8. Write two lines of textto the screen. The first will print “I2C Address:” followed by the address stored inside the I2C_ADDR object. Then insert a new line character “\n” and then write another line saying “Tom’s Hardware" (or whatever you want it to say). Pause for two seconds to allow time to read the text.lcd.putstr("I2C Address:"+str(I2C_ADDR)+"\n")

9. Clear the screenbefore repeating the previous section of code, but this time we display the I2C address of the LCD display using its hex value. The PCF8574T chip used in the I2C backpack has two address, 0x20 and 0x27 and it is useful to know which it is using, especially if we are using multiple I2C devices as they may cause a clash on the bus.lcd.clear()

12. Turn the backlight back onand then hide the cursor. Sometimes, a flashing cursor can detract from the information we are trying to communicate.lcd.backlight_on()

13. Create a for loopthat will print the number 0 to 19 on the LCD screen. Note that there is a 0.4 second delay before we delete the value and replace it with the next. We have to delete the text as overwriting the text will make it look garbled.for i in range(20):

Save and runyour code. As with any Python script in Thonny, Click on File >> Saveand save the file to your Raspberry Pi Pico. We recommend calling it i2c_lcd_test.py. When ready, click on the Green play buttonto start the code and watch as the test runs on the screen.

LCD I2C 1602 Display Module Blue-  Here"s a cherished item in the Arduino prototyping craft. The LCD I2C 1602 Display Module is an LCD that uses the I2C protocol to communicate with microcontrollers. With this, you only need 4 connections to work with the device: Power, Ground, SDA, and SDL. Furthermore, it can also display a max of 16x2 characters. Its ease of use and efficiency has proven itself a great tool for engineers and makers alike.

A display could be the most sought-after thing in case you want to integrate some visual outputs into your Arduino projects. The LCD 12C 1602 Display can be a reliable solution if you prefer a small-sized panel. It comes to serve you with a simple and cost-effective solution in the context of Arduino units. The display allows you to add a 16x2 White on RGB Liquid Crystal Display.

Furthermore, the LCD display features a good blue backlight reflection that ensures great integrations for Arduino-based projects. The module houses 16 characters by a 2-line display to generate clearer and high-contrast text with blue lighting in the background. Arduino LCD Display projects will run short of pin integrations, especially when it collaborates with Arduino UNO.

At the same time, wire soldering and connection establishment also tend to be complicated affairs. The 12C 1602 LCD Display owns a 12C communication interface.It signifies the requirement of only 4 pins for the LCD unit to get it in perfect working condition. It includes GND, SDA, VCC, and SCL. Ultimately, it comes to saving at least 4 pins (analog/digital) on the Arduino projects. Since connectors are standard XH2.54, it allows you to connect directly with the jumper wire.

The key consideration that can also captivate your attention is the drawback derived from the LCD 1602 Parallel Display. As per this attribution, a user is likely to waste about 8 pins on the Arduino projects to get the display to work. What makes this product fascinating is that the 12C adapter is soldered right onto the pins on the display unit. Thereby, you require connecting only 12C pins to capture a good source of library.

Furthermore, the wiring event is going to be super easy if your board has already integrated the 12C adaptor. You only need to hook up 4 pins, including GND and VCC. You’ll have to use a 5V pin since the LCD Display unit works with 5 volts.

Viewing Angle: 6HLibrary:GitHub - fdebrabander/Arduino-LiquidCrystal-I2C-library: Library for the LiquidCrystal LCD display connected to an Arduino board.

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2x16 Character LCD is most popular display component for small controller like Arduino, but most of these LCD uses parallel interface. In most of the case, you will need 10 pins to control it or to display message on it. 8-pin are for the data, Enable and Latch pin for signal control. Minimum, you will need 6-pin for 4-bit mode interface. Still a lot of pins being used up :(

This I2C module for LCD will help you save all those precious pins. This module will only need 2 GPIO pins (specifically I2C pins) to send message to Character LCD.

This module uses an I2C communication interface. Including the I2C pins: SCL and SDA, it only require two more pins for power, VCC and GND. It saves 4 to 8 pins on Arduino or any other controller. The pins are breakout into standard right angle header (2.54mm spacing), you can connect with female jumper wire directly.

It comes with potentiometer for LCD contrast adjustment, and configurable I2C Address through A0, A1 and A2 pads. Anyway, the default address is 0x3F or 0x27. There is also a mini jumper to activate or deactivate the backlight.