Template: LCD1602 I2C Module Arduino
Working With Arduino
Hardware Connection
| Module Interface | Arduino Pin |
| VCC | 5V/3.3V |
| GND | GND |
| SCL | SCL |
| SDA | SDA |
Connection diagram:
Arduino IDE
Download this sample demo in the Resource, enter the Arduino folder, and double-click to open the test.ino file, Arduino IDE will automatically load the driver library under the same folder, select the correct driver board model and its corresponding port number, click the upload button to automatically start compiling and uploading the demo, and the demo will run automatically after the upload is successful.
This demo has been tested and run on Arduino uno development board and Arduino mega2560 development board.
Working With ESP32
Environment Setting
Install the ESP32 Plug-in in the Arduino IDE
1. Open the Arduino IDE, click on the file in the upper left corner, select Preferences:
2. Add the following link in the additional development board manager URL, then click OK.
https://dl.espressif.com/dl/package_esp32_index.json
Note: If you already have the ESP8266 board URL, you can separate the URLs with commas like this:
https://dl.espressif.com/dl/package_esp32_index.json, http://arduino.esp8266.com/stable/package_esp8266com_index.json
Download the packages compressed package and copy the decompressed packages file to the following path:
C:\Users\xutong\AppData\Local\Arduino15
Note: Replace the username: xutong with your own username.
Hardware Connection
When connecting to ESP32, choose to connect with a 4PIN cable, please refer to the pin correspondence table below:
If you are using a pin header or PH2.0 4PIN interface, you need to connect according to the following table.
| LCD | ESP32 | |
| Pin No. | ||
| VCC | 5V/3.3V | |
| GND | GND | |
| SCL | GPIO22 | |
| SDA | GPIO21 | |
Take the LCD1602 Module using the PH2.0 4PIN interface as an example, and connect it to the ESP32 according to the above table:
(Please connect according to the pin definition table. The color of the wiring in the picture is for reference only, and the actual color shall prevail.)
Connect to ESP32 as shown in the figure below.
Use With Arduino IDE
Download this sample demo in the Resource, enter the ESP32 folder, double-click to open the test.ino file, Arduino IDE will automatically load the driver library under the same folder, select the correct driver board model and its corresponding port number, click the upload button to automatically Start compiling and uploading the demo, and the demo will run automatically after the upload is successful.