Pro Mini is the small 3.3V version of the development boards. This board has all the features like the other development boards have. It comes with the onboard reset button and indicator LED for power. The board doesn't have any board programmer, so the programmer has to be used externally in order to upload any code. Since the operating voltage is 3.3V it can be easily used with 3.3V Logic sensors and modules like LoRa module, nRF24L01 etc.. without any need for level converters.

Pro Mini Specifications:

• Microcontroller: ATmega328
• Clock frequency: 8MHz.
• Digital I/O Pins: 14
• 8 analog input port: A0 ~ A7.
• Circuit Operating Voltage: 5V
• Support serial download.
• A pair of TTL level serial port transceiver : RX / TX.
• 6 PWM port: D3, D5, D6, D9, D10, D11.

Package Includes:

1 x Pro Mini Board - 3.3V/8MHz