Price: [price_with_discount]
Technical parameters:
1. 20 digital input/output port RX and TX, D2 ~ D13, A0 ~ A5
2. 8 analog input port A0 ~ A7
3. 1 to the TTL level a serial port to send and receive port RX/TX
4. 6 PWM port, D3, D5, D6, D9, D10, D11
5. Using Atmel Atmega168P-AU microcontroller
6. Support serial download
7. Support external 4.5V ~ 8V dc power supply
8. Support the Li-ion polymer batteries while direct connect Vcc Pin
9. 8 MHZ clock frequency
10. Size: 33.3 * 18 (mm)
