Turn OFF the relay with delay. You can use this code example to introduce a delay in your circuit. The variable “stayON” is used to delay() the program execution with the desired amount of time. In ...

Taste The Code. Arduino Relay Basics - How It Works and How to Use It. Posted: June 3, 2025 | Last updated: June 3, 2025. Hi, I'm Bill.

Goal: Control lights and appliances using relays, sensors, and a web interface. Components Needed: Raspberry Pi 4. Arduino Uno. 4-channel relay module. PIR motion sensor. Steps: Use Arduino to handle ...