Contributors:
Elias The Sparkiest Introduction
SparkFun's Qwiic Quad Relay is a product designed for switching not one but four high powered devices from your Arduino or other low powered microcontroller using I2C. It has four relays rated up to 5 Amps per channel at 250VAC or 30VDC that are controlled by an ATtiny84A. Each channel has its own blue stat LED, silk for easy identification, and screw terminals for easy connection. The product is Qwiic enabled allowing you to easily integrate the Quad Relay with other products in the Qwiic environment, which means no solder neccessary!
33 available
COM-16566
The SparkFun Qwiic Quad Relay is a unique power accessory board, used for switching 4 high powered devices from your Arduino …
6
⚡
Before we begin! There are a number of safety precautions included in the product, but that can not account for human inexperience and error. This product and the example below interacts with
HIGH AC voltage and so is intended for people experienced around, and knowledgeable about
HIGH AC voltage. If that's not quite your jam, then take a look at our
IoT Power Relay! It's not I
2C but the IoT Power Relay contains shielding to prevent accidental shock.
Required Materials
For the example under Hardware Assembly, I used the following materials to control a load (i.e. a lamp). 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.
In stock
DEV-15123
The SparkFun RedBoard Qwiic is an Arduino-compatible development board with a built in Qwiic connector, eliminating the need …
20
In stock
PRT-12795
These are 6" long jumper wires with male connectors on both ends. Use these to jumper from any female header on any board, to…
2
In stock
PRT-14427
This is a 100mm long 4-conductor cable with 1mm JST termination. It’s designed to connect Qwiic enabled components together…
In stock
TOL-15312
This is a high quality switching 'wall wart' AC to DC 5V 2000mA Barrel Jack wall power supply manufactured specifically for S…
2
In stock
COM-10302
This is a simple 12-pack of momentary, multicolor buttons, great for all sorts of projects!
8
In stock
CAB-10215
USB 2.0 type A to Micro-B 5-pin. This is a new, smaller connector for USB devices. Micro-B connectors are about half the heig…
15
In stock
PRT-12044
This red Mini Breadboard is a great way to prototype your small projects! With 170 tie points there's just enough room to bui…
Additional Options
You could also use our 9 volt wall adapter if that suits your fancy and we have a number of Qwiic cable sizes to fit your needs.
In stock
PRT-14427
This is a 100mm long 4-conductor cable with 1mm JST termination. It’s designed to connect Qwiic enabled components together…
In stock
PRT-14426
This is a 50mm long 4-conductor cable with 1mm JST termination. It’s designed to connect Qwiic enabled components together …
Retired
TOL-00298
High quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for Spark Fun Electronics. T…
12
Retired
Retired
PRT-14428
This is a 200mm long 4-conductor cable with 1mm JST termination. It’s designed to connect Qwiic enabled components together…
Retired
Retired
PRT-14429
This is a 500mm long 4-conductor cable with 1mm JST termination. It’s designed to connect Qwiic enabled components together…
1
Retired
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.
Retired
TOL-14782
These are simple flush cutters from Excelite that give you a way to cut leads very cleanly and close to the solder joint.
2
Retired
Only 5 left!
TOL-09146
This is just your basic reversible screwdriver - pocket sized! Both flat and phillips heads available. Comes with pin clip an…
3
Retired
TOL-14872
The Self-Adjusting Wire Stripper can take a wire, placed in the head of the tool, compress the handles, and you will have a p…
2
Retired
Suggested Reading
If you aren't familiar with the Qwiic system, we recommend reading here for an overview.
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.
