The Arduino UNO is one of the favourite choice for Arduino projects. It has the most common type and number of ports needed for most of the basic electornic diy projects. This board is the most used and has the largest community with well documented libraries and projects.
|Operating voltage||5V minimum, 7-12V recommended|
|Digital Pins||14 (6 of them PWM enbaled)|
|DC current maximum||20mA for I/O pins, 50mA for 3,3V|
|Flash Size||32 KB (0,5KB used by bootloader)|
|SRAM size||2KB (ATmega328P)|
|Size||68,6mm * 53,4mm|