What is Relay? | How to control Relay using Arduino

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In this video we are going to learn what is relay and how to control it using Arduino in depth.

Also will show you how can we use it to switch on/off AC devices automatically using Arduino Programming.

As relays are integral part of our electronics projects, I have explained in details about what is relay , with diagram and code explanation.

👉Components list :
✅ Jumper wires
✅ Battery DC 7-12V
✅ AC Bulb Socket
✅ AC Plug with wire
✅ Bulb

👉 Shorts Channel :

👉Code and diagram:

👉Video - Automatic plant watering system:

👉Video - Home automation:

👉Video - What is Arduino:

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It is a useful video compared to the other ones available on YouTube. One of the reasons is the classification of relays mentioned at 1:36. Could you also add a circuit diagram for the example shown in the video? As the example pertains to the use of AC current, a warning should be given for personal safety.

kamrulome

Wow .. this is very useful ... Well explained

prabhatverma

Good video. The only suggestion I would make is that your delays in your code should have been set to different values. for instance 4000 and 2000. This way they student would know if they had the relay backwards.

PeterSedesse

do I have to use the COM ? I only conect my NC to the positive of the led and the negative to GND of arduino, the IN, GND, and VCC of relay are conected

crishatoman

Could you explain why relay is necessary since we can also connect directly to arduino pin and turn on off?

anoniem

Good day sir, is the 9V battery enough to trigger the circuit if i want to add RTC module?

Cheese.waffle

Ye jugar wali vidio hain kor proper swich relay ka bana huva ho jo system mai use ho raha ho sab ap ki tarha jugar vidio bana k bethey hain

AliShahchenal