BeagleBone Dual Relay Plus IO

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BeagleBone Relay Cape

The Logic Supply BeagleBone Relay Cape is perfect for the tinkerer and experimenter who wants to control real devices from the BeagleBone. This feature-rich product includes two high current relays, inputs, outputs, switches, and LEDs that make it easy and safe to control physical devices.The design profile of this cape allows this product to fit inside the Logic Supply case, providing a reliable permanent solution.


Electrical Specifications

Connectors 8-position screw terminals (relay contacts)

3-pins R/C servo header pins
10-postion screw terminals (digital i/o)
4-position analog port (soldering required)

Ports Dual High Current Relays (Com, N/O, N/C) with LEDs

4 digital inputs
4 push-button switches
4 digital outputs with LEDs
1 R/C servo port
1 Blue user LED
1 Analog or potentiometer input
1 Analog input (battery voltage)

Levels Digital outputs (3.3V or 5V) jumper selectable

Digital inputs (0-3.3V) 12V tolerant
R/C Servo +5V pulse
Analog input (potentiometer) 1.8V max
Analog input (divided-by-10) 18.0V max
Relays contacts rated 10 Amps

Mechanical Specifications

Size 2.15" x 3.43" (55 x 87 x 20 mm above P8,P9)
Layers 2
PCB Thickness .062"
RoHS Compliant Yes

Signal Assignments

BeagleBone Relay Cape Pin Usage
P9-14 R/C Servo
P9-15 Out4
P9-19 I2C2_SCL
P9-20 I2C2_SDA
P9-21 Out3
P9-22 Out2
P9-24 Blue LED
P9-27 K2_relay
P9-32 Vref (1.8V)
P9-34 Agnd
P9-36 Ain5
P9-40 Ain1 (div-by-10)
P9-42 Out1
P8-11 In1
P8-12 In2
P8-14 In3
P8-15 In4
P8-18 K1_relay


EEPROM Support Yes
Board Name BeagleBone Relay cape
Version R01
Manufacturer Logic Supply
Part Number CBB-Relay
Pins Used 16


Open Source Yes
System Reference Manual Yes
Schematics EAGLE, PDF
Gerber Files Yes
Bills of Materials Yes


Manufacturer's Link

For more information please visit [1]

To go back to the cape list, please click BeagleBone Capes