Zitrades Nano v3.0 ATmega328 boardfor Arduino IDE (Arduino-compatible) With Free USB Cable Micro-controller:ATmega328P-AU Operating Voltage: 5V Input Voltage (recommended):7-12V;Input Voltage (limits):6-20V DC Current per I/O Pin:40 mA;DC Current for 3.3V Pin:50 mA Flash Memory:32 KB of which 2 KB used by bootloader