Finally the power outlet box.
Arduino power control relay.
Without the jumper cap you need to provide an independent power source to power up the relay s electromagnet through the jd vcc pin.
Control up to 65 280 relays with your arduino.
When the button is pressed the fan will turn on and will remain in this state until the button is pressed again.
The connections between the relay module and the arduino are really simple.
In this arduino relay control circuit we have used arduino to control the relay via a bc547 transistor.
The control pin for the relay is connected to the pin 8 of arduino.
Use the io expander and relay expander with the arduino to control up to 65 280 relays.
Project tutorial by christian.
In this quick arduino tutorial i will explain how you can control a relay using the arduino board one 1k and one 10k resistors 1 bc547 transistor one 6v or 12v relay one 1n4007 diode and a 12v fan.
Below given is relay driver circuit to build your own relay module.
The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino.
We need to open the box and make connections.
Here to turn on the relay with arduino we just need to make that arduino pin high a0 in our case where relay module is connected.
Learn how to use relay with arduino how relay works how to connect relay to arduino how to code for relay how to program arduino step by step.
Circuit diagram and working.