Using ESP32-C6-MINI-1 module, equipped with RISC-V 32-bit single-core processor, supporting clock frequency up to 160 MHz Integrated 320KB ROM, 512KB SRAM, 16KB LP SRAM and 4MB Flash memory Integrated 2.4GHz Wi-Fi 6 and Bluetooth LE dual-mode wireless communications with superior RF performance Using USB Type-C interface, no need to worry about plugging forward and reverse It leads to rich peripheral interfaces, and the pin interface is compatible with the Pico development board, with strong compatibility and scalability. Stamp hole design can be directly welded and integrated into the base plate designed by the user. Supports multiple low-power working states and can adjust the balance between communication distance, data rate and power consumption to meet the power consumption requirements of various application scenarios Please note that to the functional integrity of the device, be sure to call the provided WS_TCA9554PWR file to set GPIO22 (SDA) and GPIO23 (SCL) as I2C functions for GPIO expansion Please note that GPIO22 (SDA) and GPIO23 (SCL) are already used in TCA9554PWR. Currently, only I2C slave devices can be connected to these pins. These two pins are no longer allowed to be used for other functions. Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Colour:Black Material:PCB Package Contents: 1x Development Board Only 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.