I2C Dat

// I2C device found at address 0x40 ! // INA219, INA226

for IOD1001-dat

//I2C device found at address 0x3C ! // OLED = 0x78

//I2C device found at address 0x75 ! // IP5306

//I2C device found at address 0x76 ! // BME280

// I2C device found at address 0x1F ! // KX023 // I2C device found at address 0x38 ! // AHT20

Boards

Set custom I2C

Wire.begin(I2C_SDA, I2C_SCL);

code library

the most easy to use library for ESP

  • https://github.com/ThingPulse/esp8266-oled-ssd1306

ref