The board uses 12c to connect to the OLED display via the SDA (D21/GPIO21) and SCL (D22/GPIO22) pins. The 12c address of the OLED display is 0x3coModule body ESP-WROOM-32 module, ESP32 0.96inch OLED board has all the functions of the traditional ESP32 Devkit V1 module, has exactly the same peripheral ports, seamlessly integrates with the 0.96-inch OLED display, the display has a high resolution of 128x64 and driver, and is compatible with the 12C interface.The module is the ESP-WROOM-32 development board802.11b/g/WifFi+BT module;Low-power dual-core 32-bit CPU, can be used as an application processor;The main frequency is up to 240MHz, and the computing power is up to 600DMIPS; built-in 520KB ; supports UART/SPI/I2C/PWM//ADC and other interfaces; supports openOcD debugging interface;Supports multiple sleep modes, and the current is as low as 6.5uA in deep sleep; embedded Lwip and FreeRTOS;Support STA/AP/STA+AP mode;Support Smart Config/AirKiss one-click network configuration;Universal AT commands, easy to use;Support local serial port upgrade and remote upgrade (FCT).Specification:Mini USBColour:BlackMaterial:PCB+PVCPackage Contents:1 x ESP32 Development BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.