Day 9 Arduino Advent Calendar
First published at Saturday, December 09 2017
Please DO NOT try to connect your relay up to high voltage circuits. This should only be done by trained professionals.
Arduino Advent Calendar Day 08 - Buzzer!
Today we're going to use a rock your world with relays!
Let's Get Started with the Day 9 Guide!
What is a relay?
A relay module is a switch that we can operate from our Arduino.
Inside the relay, an electromagnet made up of a coil and ferrite material that is used to move the switch to different positions mechanically.
You can use a relay to control your LOW VOLTAGE (less than 12 Volts DC) Christmas lights, by cutting a wire in the string of lights and passing it through the relay.
Enough talking about it let's go and build up the circuit over at guides.littlebird.com.au .
We're happy to help!
If you find you're getting stuck with today's guide, hit up our team of highly trained Arduino ninjas on this forum thread.