Arduino Nano - 168P

Arduino Nano
Price: $7.50

Arduino Nano

Atmel Atmega168P-AU MCU

14 Digital input / output ports D0 ~ D13, 

8 analog input ports A0 ~ A7 
1 pairs of ports TTL level serial transceiver RX / TX 
6 PWM ports, D3, D5, D6, D9, D10, D11