The same ATmega328P as the Uno in a package that drops straight into a breadboard, which makes it the usual choice once a prototype stops being a pile of jumper wires and starts being a thing.
Specifications
| Microcontroller | ATmega328P |
| Clock speed | 16 MHz |
| Digital I/O | 14 (6 PWM) |
| Analog inputs | 8 |
| Flash / SRAM | 32 KB / 2 KB |
| Dimensions | 45 x 18 mm |
| USB | Mini-B |
