Stm32 serial lcd 20 x 2 driver4/24/2024 ![]() I have used 16×2 LCD display module in quite a lot of my projects with a wide variety of Microcontrollers like 8051, ARM7 based LPC2148, ATmega8, Arduino UNO and PIC. The information displayed on the LCD can be related to the project itself like a reading from a Temperature Sensor or special data like debug messages or error codes. Small Alpha-Numeric Character Displays like the very popular 16×2 LCD Display are very useful little components as you can use them to display some important information related to your project. Identifying the Slave Address of PCF8574 Module.How to Interface I2C LCD with STM32F103C8T6?.For that we need to choose and adjust to our needs.Īs a reference, the article below is presented and reviewed with examples of programs from several LCD models on the market : Quite a lot of LCDs on the market with various models, each of which has its own advantages. How to find out the I2C Device / Electronic Module Address.There are a number of I2C LCD Backpack modules that are on the market, in principle it’s the same only difference is the I2C address.įollow the guidelines in the following article to find out what the actual address of your I2C Backpack is : If the LCD does not blink 3 times, most likely because the I2C address is wrong. For new LCDs, you usually need to adjust the brightness or contrast by turning the blue trimpot behind the I2C LCD Backpack so that the writing can be seen clearly. Lcd.begin(20,4) // initialize the lcd for 20 chars 4 lines and turn on backlightĪfter the sketch / program code has been successfully uploaded, if the LCD flashes or blinks 3 times, it means that the I2C LCD program has succeeded. Serial.begin(9600) // Used to type in characters put your setup code here, to run once: Set the pins on the I2C chip used for LCD connections: ![]() set the LCD address to 0x27 for a 20 chars 4 line display LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE) // Set the LCD I2C address Then upload the sketch below to the Arduino UNO board : If the Arduino IDE is open, close it and run it again. Once downloaded, extract the library and copy it into the library folder of the Arduino IDE. Previously, first download the library for the I2C LCD Backpack : If it has been arranged between Arduino UNO and LCD according to the header pins that are on each of them as shown in the following image : Wiring I2C LCD Dengan Arduino Program Code The following is a picture of the LCD20x4 which is equipped with an I2C LCD Backpack module : I2C LCD Backpack Connection / Wiring Diagram I2C LCD 20×04 / I2C LCD 16×02
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