The Arduino-compatible VMA103 is a microcontroller board based on the ATmega32u4 and is pin compatible with Arduino Leonardo boards. It has 20 digital input/output pins (7 of which can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller, so all you need to do is connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Features
100% compatible with Arduino® Leonardo
Specifications
Microcontroller: ATmega32u4
Operating voltage: 5 VDC
Input voltage (recommended): 7-12 VDC
Input voltage (limits): 6-20 VDC
Digital I/O pins: 20
Analog input pins: 12
PWM channels: 7
DC current per I/O pin: 40 mA
DC current for 3.3 V pin: 50 mA
Flash memory: 32 kB (ATmega32u4) of which 4 kB used by bootloader
