Qwiic Single Relay Hookup Guide

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Contributors: Englandsaurus
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Introduction

The Qwiic Single Relay is SparkFun’s easiest to use relay yet. The single relay can handle up to 5.5A at 240 VAC for long periods of time. The Qwiic connectors and screw terminals also mean that no soldering is necessary.

SparkFun Qwiic Single Relay

SparkFun Qwiic Single Relay

COM-15093
$11.95

Required Materials

To get started, you’ll need a microcontroller to control everything. You may not need everything though depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.

SparkFun RedBoard - Programmed with Arduino

SparkFun RedBoard - Programmed with Arduino

DEV-13975
$19.95
39
SparkFun ESP32 Thing

SparkFun ESP32 Thing

DEV-13907
$21.95
60
Particle Photon (Headers)

Particle Photon (Headers)

WRL-13774
$19.00
29

Raspberry Pi 3

DEV-13825
92

Now to get into the Qwiic ecosystem, the key will be one of the following Qwiic shields to match your preference of microcontroller:

SparkFun Qwiic Shield for Arduino

SparkFun Qwiic Shield for Arduino

DEV-14352
$6.95
SparkFun Qwiic HAT for Raspberry Pi

SparkFun Qwiic HAT for Raspberry Pi

DEV-14459
$5.95
1
SparkFun Qwiic Shield for Photon

SparkFun Qwiic Shield for Photon

DEV-14477
$5.95

You will also need a Qwiic cable to connect the shield to your Qwiic Single Relay, choose a length that suits your needs.

Qwiic Cable - 100mm

Qwiic Cable - 100mm

PRT-14427
$1.50
Qwiic Cable - 500mm

Qwiic Cable - 500mm

PRT-14429
$1.95
Qwiic Cable - 200mm

Qwiic Cable - 200mm

PRT-14428
$1.50
Qwiic Cable - 50mm

Qwiic Cable - 50mm

PRT-14426
$0.95

Tools

You will need a flush cutter and wire stripper to remove the sheath and insulation from a cable. A Phillips head screwdriver will be required to connect the load's to a screw terminal.

Self-Adjusting Wire Strippers

Self-Adjusting Wire Strippers

TOL-14872
$16.95
Flush Cutters - Xcelite

Flush Cutters - Xcelite

TOL-14782
$7.95
SparkFun Mini Screwdriver

SparkFun Mini Screwdriver

TOL-09146
$0.95
3

Suggested Reading

If you aren’t familiar with the Qwiic system, we recommend reading here for an overview.

Qwiic Connect System
Qwiic Connect System

We would also recommend taking a look at the following tutorials if you aren’t familiar with them.

Serial Communication

Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!

I2C

An introduction to I2C, one of the main embedded communications protocols in use today.

Serial Terminal Basics

This tutorial will show you how to communicate with your serial devices using a variety of terminal emulator applications.

Qwiic Shield for Arduino & Photon Hookup Guide

Get started with our Qwiic ecosystem with the Qwiic shield for Arduino or Photon.