- Microcontroller: ATmega328
- IC Wi-Fi: ESP8266
- USB-TTL converter: CH340G
- Power Out: 5V-800mA
- Power IN. USB: 5V?(500mA max.)
- Power IN. VIN/DC Jack: 9-24V
- Power Consumption: 5V 800mA
- Logic Level: 5V
- WiFi: Wi-Fi 802.11 b/g/n 2.4 GHz
- USB: Micro USB
- Clock Frequency: 16MHz
- Operating Supply Voltage: 5V
- Digital I/O: 14
- Analog I/O: 6
- Memory Size: 32Mb
| Connection | DIP | ||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| ATmega328<->ESP8266 | ON | ON | OFF | OFF | OFF | OFF | OFF |
| USB <->ATmega328 | OFF | OFF | ON | ON | OFF | OFF | OFF |
| USB<->ESP8266 (Update firmware or sketch) | OFF | OFF | OFF | OFF | ON | ON | ON |
| USB<->ESP8266 (communication) | OFF | OFF | OFF | OFF | ON | ON | OFF |
| All independent | OFF | OFF | OFF | OFF | OFF | OFF | OFF |
