How to make Relay Module circuit and PCB and Earn money

Relay Module circuit and PCB

Welcome back to one more electronics project. Here I will tell you how you can make Relay Module circuit and PCB and earn money from sell this project.

Basically Relay module we use a mechanical switch. When we make any IoT home automation electronics project that time we need relay module according to the number of appliances.

For example, if we want to control only one application, then we need one channel relay module. And if you want to control four applications, then we need a four-channel relay module.

So if you follow all the instructions of this post, you will able to make any number of the relay modules. But I make a 4 Channel relay Module circuit and PCB. Just follow the below instructions step by step.

Needed Components for 4 Channel Relay Module

SL NoComponents NameQuantityBuying Link
15V Relay4BUY
2IN4007 Diode4BUY
3BC547 NPN Transistor4BUY
41K Resistance5BUY
5817 Optocoupler4BUY
65mm LED4BUY
7330E Resistance4BUY
83pins Terminal Block4BUY
9Male Header Pins6BUY
Table of Needed Components for making 4 Channel Relay module

Circuit diagram and Gerber File for 4 Channel Relay Module

To download the Circuit Diagram and Gerber file just click on the below button, which you will get below this block. After click on the below button, a new page will be open on your secret with the final Circuit Diagram and Gerber file download link. just click on them and download the circuit diagram and Gerber file of channel Relay Module.

Download Gerber File

Download Circuit Diagram

Circuit diagram View of Channel Relay Module

Circuit diagram of 4 channel Relay Module

Gerber file view of 4 Channel Relay Module

4channel relay module gerber view
4channel relay module gerber view

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FAQ of How to Make Relay Module circuit and PCB and Earn money

How do you make a relay module circuit?

relay module PCB

It is very easy to make a Relay module circuit. in this post, I have explained how you can make a relay module circuit with an optocoupler step by step. If you want to know the circuit-making process of the relay module, read this article very carefully step by step.
Needed Components to make A Relay Module

1. 1k resistance
2. 330 Ohm resistance
3. 817 Optocoupler
4. 4007 Diode
5. BC547 Transistor
6. Male Headers pins
7. RED LED and Green LED
8. Vero Board
9. Relay

How do you make a 12V relay module?

To make 12v relay module circuit just change the relay and add a 7805 voltage regulator to provide 5v to the optocoupler input section. To know more information about 12v relay module read this article very carefully.

How do you build a 4 channel relay board?

To build a 4 channel relay module do the same thing which you do for making one channel relay module. Just you have to do connect all the positive(+) and the Negative (-) terminal with all the circuits. just input signal terminal will be different for all the four relay module circuits. To know more information about this relay module circuit read this post very carefully, I have explained everything about making a relay module.

About Dipankar Das

I am a Professional Electronics Technician, Blogger, Youtuber, Social Media Influencer, and founder of Dip ELectyronics LAB. I have profession on ELectronics, PCB Designing, Project Making, Gadgets Repairing and 3D Printing. Keep visiting to get important information.

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