ATmega328P Nano V3 development board compatible with Arduino.

Board specifications:

• Microcontroller: ATmega328p
• Operating Voltage: (logic level) 5 V
• Input Voltage: (recommended) 7-12 V
• Input Voltage: (limits) 6-20 V
• 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: 32KB
• SRAM: 2 KB
• EEPROM: 1 KB
• Clock Speed: 16 MHz
• Dimensions: 0.73" x 1.70"
• Length: 45 mm
• Width: 18 mm
• Weigth: 5 g

Works perfectly with the Arduino IDE. We use it on our small DIY projects where an Arduino uno is to big.