The arduino uno is a microcontroller board based on the atmega328 (datasheet). It has 14 digital input output pins (of which 6 can be used as pwm outputs), 6 analog inputs, a 16 mhz ceramic resonator, a usb connection, a power jack, an icsp header,...
The arduino leonardo is a microcontroller board based on the atmega32u4 (datasheet). It has 20 digital inputoutput pins (of which 7 can be used as pwm outputs and 12 as analog inputs), a 16 mhz crystal oscillator, a micro usb connection, a power...
We are offering pro mini microcontroller boards. The arduino pro mini is a microcontroller board based on the atmega168 (datasheet). It has 14 digital inputoutput pins (of which 6 can be used as pwm outputs), 8 analog inputs, an on-board resonator,...