44+ Arduino Pro Mini Pinout I2C Gif. Arduino promini , as the name indicates , is a miniature version of uno.it runs on 16 mhz crystal ,atmega328 ,but lacks usb connectivity. The atmega328 also supports i2c (twi) and spi communication.
It is very small as.
Arduino pro mini is a microcontroller board developed by arduino.cc and comes with atmega328 microcontroller incorporated inside the board. Arduino promini , as the name indicates , is a miniature version of uno.it runs on 16 mhz crystal ,atmega328 ,but lacks usb connectivity. Notice in the pinout description that the analog pin number a4 and a5 has added functionality that is these pins together implement the i2c. The atmega328 also supports i2c (twi) and spi communication.
