Arduino lcd library circuit1/6/2023 We used the LCD display which need a voltage of 5V we connected it to the VIN of the ESP where we can get 5V while microUSB is connected to the ESP 32. Circuit Diagram: Click to enlarge.Īs you can see from the above circuit diagram we have added a 10 K Potentiometer which is used to adjust the contrast of the LCD display so the the characters are visible clearly. Lets connect them by following the below Schematic diagram. This method is relatively complex when compared with another method as it includes bunch of connecting wires which allocates more number of pins on ESP32. In this method we are connecting the LCD module to ESP by using 12 connecting wires from 16 pins on the LCD Display. with a jumper for Turning on and off the Backlight of the display.ĮSP32 Pinout: Click to enlarge Method 1) Interfacing 16X2 LCD module with ESP 32 without using I2C adapter This module has a PCF8574T chip which can handle 16X2 and 20X4 displays and has an inbuilt potentiometer to adjust the contrast. 5V power supply (Micro USB or External).
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