It has 14 digital input/output pins (6 of which are hardware PWM), 8 analog inputs (6 of which are GPIO), and a 16 MHz crystal oscillator.
It runs Optiboot (select “Arduino Uno” in the Boards menu), and has “.100 pitch headers for easy breadboard prototyping.
Its small size makes it well-suited to applications with stringent weight and space requirements, such as R/C planes, wearables, and spacecraft.
- 23.5mm x 21mm x 2.2mm, 2.2mm tall
- Programmable with a Modern Device USB-BUB II or any FTDI adapter
- Optiboot bootloader (Arduino UNO board setting)
- Standard Atmega (Arduino) 328 features
- 14 I/O pins
- 8 analog pins (A6, A7, are analog input only – no I/O)
- 32kB Flash Memory
- 2kB RAM