1. The design and modification are based on the shape and structure of the for Raspberry Pi. The appearance is similar to the structure of the for Raspberry Pi motherboard. The 2 x 20 expansion ports next to it have reserved pins that match the for Raspberry Pi GPIO.
2. For Raspberry Pi expansion board
3. TF card holder, self-elastic card holder, easy to pull out the card
4. Chip: ESP32-WAROVER
5. Relay: HFD3 5V 2A
6. RTC: PCF8563
7. Type-c input: 5V
8. Purpose: IoT programming development
9. Power: 0.5W
10. Rated voltage: 5v
11. DC-DC input: 5-12V
12. Extension pin header: 2.54 2 x 20
13. Double-layer USB interface: I2C/UART function respectively
14. Double-layer USB expansion port: output 5V/1A
15. Button: RST button, custom button
16. USB output: 5V 1A
17. Dimensions: 99.7 x 62.5 x 31.2mm
