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Rboard is a unique Arduino board which features 4 channels isolated relays, an XBee socket, and an ATMega328. This board will add relay control as well as wireless connectivity to your projects. It’s great for anything from home automation to robot control. The possibilities are endless!


PCB size 78.74mm X 106.08mm X 1.6mm
Power supply 6~20V DC
Microprocessor Atmega328
Indicators PWR, PWR_EXT, C0, C1, C2, C3
Communication Interface XBee, nRF24L01+, UART
RoSH Yes

Electrical Characteristics

Specification Min. Typical Value Max. Unit
Power Voltage 6 - 20 VDC
Input Voltage VH (Target Voltage = 3.3V) 3 3.3 3.6 V
Input Voltage VL: -0.3 0 0.5 V
Current Consumption - 100 500 mA



Top View Map

Pin Map List

PWR_EXT Setting


Datasheet for RBoard

Schematic for RBoard

Useful Link

RBoard (Atmega 328P with Arduino Bootloader) + Relay Shield