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REXQualis R3 Board is 100% compatible with the Arduino IDE.
REXQualis R3 Board uses an ATMega16U2 instead of the ATMega8U2 chip. Faster transfer rates and more memory.
Control using ATMEL ATMEGA328P chip(the same with Arduino R3)
Clear prints on the female header connector, more precise and easier to use the wire.
Powered via the USB cable or power it with an AC-to-DC adapter or battery to.