Day 9 Arduino Advent Calendar
First published at Saturday, December 09 2017
Let's Get Started with the Day 9 Guide!
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!
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.