Build a simple automation project using Arduino Uno and IR remote.
Project tutorial by suhail jr
Looking to make a relay board yourself? Then you're in the right place.
This is a simple and effective project for beginners using Arduino and an ultrasonic sensor. It only takes a half hour to make this project.
thanks krishna for notifying error, i just omitted when copying code(i will fix it). if you followed the connection correctly it will should work, however check once again in connections.
you cant connect the led to a 9volt battery directly. you need to put a resister between battery and led else the LED will damage. i recommend you check once again these : check relay module work, connection to relay ,led and battery , make sure give a resister between led and battery.
Or connect with your social account:
New here? Create an account