Micro controller is atmega328, operating voltage (logic level)5 v;input voltage 7-12 v;input voltage) limits) 6-20v;digital i/o pins 14 (of which 6 provide pwm output);analog input pins 8;dc current per i/o pin 40 ma;flash memory 32 kb (atmega328) of which 2 kb used by boot loader;ram 2 KB (atmega328);eeprom 1 kb (atmega328);clock speed 16 mhz.
This Pro Micro 5V 16M Mini Leonardo Micro-controller Development Board For Arduino development board has 4 channel 10 bit ADC, 5 PWM pins, 12 DIO, and a hardware serial connection Rx and Tx you are familiar with Running on 16MHz and 5V, this board will remind you a lot of other Arduino compatible boards that you like.
Arduino Pro Mini board is more suitable for applications and installations where space is premium and projects are made as permanent set ups. This board is a 5 V version, powered by ATmega328. Power The Adraxx Pro Mini can be powered with an FTDI cable or breakout board connected to its six pin header, or with a regulated 5V supply on the Vcc pin.
The Arduino Uno R3 compatible ATmega328P is a micro controller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.
This is a good start-up board for learning the new ST Cortex-M3 based microcontrollers STM32F103RBT6. The headers with all microcontrollers port output allows you to easily implement your own experiments and add-ons.