embedded-lab/labs/006_i2c_lcd_1602/schematic.md

Schematic

Expected Circuit

ESP32 GND  -> LCD GND
ESP32 3.3V or 5V -> LCD VCC, only after checking module requirements
ESP32 SDA GPIO -> LCD SDA
ESP32 SCL GPIO -> LCD SCL

Important Check

Before connecting SDA/SCL to ESP32, verify I2C pull-up voltage. ESP32 GPIO must not receive 5V.

Actual Circuit

TODO: указать VCC, SDA GPIO, SCL GPIO и I2C address.