![Arduino Pro Mini(c) based modified ATmega168 AVR core board development board Arduino Pro Mini(c) based modified ATmega168 AVR core board development board](https://www.bifelectronic.com/2580-large_default/arduino-pro-minic-based-modified-atmega168-avr-core-board-development-board.jpg)
1.On board Atmega168PA - AU microcontroller chip.
2.On board 16 MHZ high-precision crystals.
3.On board UART interface, convenient and serial port communication, can also use it to download the program.
4.On board 5 V to 3.3 V power supply chip.
5.The on board 14 digital input/output pins (including 6 can be used as a PWM output), 8 analog input.
6. PCB Size:(33 mm) x17.8 (mm).