Have you ever wanted to control something powerful? Have you ever needed to turn on/off a high power device from your Arduino? Now you can with the Qwiic Relay! This device allows you to control large power loads with simple I²C commands. The Qwiic Relay is perfect for large inductive loads like DC motors.

The Qwiic Relay comes with a default I²C address but can be changed with a simple command allowing you to control over 100 Qwiic Relays on a single bus!¹

The Qwiic Relay comes fully assembled and uses the simple Qwiic interface. No soldering, no voltage translation, no figuring out which pin is SDA or SCL, just plug and go!

Footnote 1: Toggling lots of relays on a 3.3V bus can cause voltage spikes. An external power supply will be required.

• Qwiic Relay Schematic
• Example Sketches showing how to control the relay on and off, get the status of the relay, find the firmware version, and change the I2C address via software
• Eagle Files
• Firmware for the ATtiny85
• Check the repo for the latest firmware and design files