1. The Xmini-C3 development board is designed and open-sourced by Xiaozhi AI creator . It uses ESP32-C3 as the main control chip, with 16MN0RFLASH on board. The audio uses ES8311 audio decoding and NS4150 power amplifier IC solution. It uses a ceramic antenna and can run the latest version of Xiaozhi A1 smoothly and normally. 2. Supports BOOT button wake-up (does not support offline voice wake-up) 3. Supports automatic 0TA upgrade of the new version (16MFLASH) 4. Supports continuous multi-round dialogue and interrupts the dialogue with the BOOT button. 5. Supports 0.96-inch SSD13060LED display (monochrome/dual color), supports expression and status display (subtitle version cannot be automatically updated for the time being) Supports 3.7V lithium battery power supply and charging (battery power detection is not supported for the time being). Supports 3W-5W cavity speaker interface. The expansion interface is 6Pin, two-way power supply and two 10 interfaces, supporting external IO devices (to be developed). Main control: ESP32-C3QFN-32-EP Flash: NOR FLASH16MB Audio + amplifier: ES8311 + NS4150B Power chip: LGS4056 (single lithium battery) Expansion interface: UORXD, UOTXD, VSys + GND (VSys voltage is about 4.5V), 3V3 + GND USB interface: supports burning programs and computer serial port communication, supports TYPE-C standard 5V charging/power supply Accessory interface: battery, standard 1.25mm interface Speaker, standard 1.25mm interface (recommended speaker about 3W) The product appearance and printed words depending on the batch, but this does not affect use. Type:For XiaoZhi AI Voice Chat Robot Xmini ESP32-C3 Development Board Colour:As Shown Material:plastic Package Contents: 1 * AI Voice Chat Robot 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.