Electronic building block template
The professional version of Mini Pro is a microcontroller circuit board. It has 14 digital input/output pins (6 of which can be used as PWM outputs),8 analog inputs, a 16MHz resonator, a reset button, and mounting hole pin headers
Technical Parameters:

1. 14 digital input/output ports RX, TX, D2~D13,
2. 8 analog input ports A0~A7
3. 1 pair of TTL level serial port transceiver port RX/TX
4. 6 PWM ports, D3, D5, D6, D9, D10, D11
5. Using Atmel Atmega328P-AU microcontroller
6. Support serial download
7. Support external 3.3V~12V DC power supply
8. Support 9V battery power supply
9. Clock frequency 16MHz

10. Size: 33.3*18.0 (mm)