SMT 4 Node Smart HomeAutomation PCB. | ESP32

The article is being published in collaboration with JLCPCB. It is one of the most experienced PCB manufacturers with more than a decade in the field of PCB prototype and fabrication, they are committed to meeting the needs of thier customers from different industries in terms of quality, delivery, cost-effectiveness and any other demanding requests.

Introduction

Hey hello friends welcome to another post, In this article, I am going to introduce my newly design fully SMT components used 4 channel remotely and manually controlled homeAutomation PCB.

I have also made 8 channel SMT homeautomation PCB, TMT Components used homeautomation PCB.

This homeautoamtion PCB is very small in size and compact which can easily fits in your electrical switch boards.

This PCB has inbuilt OTA button, that is, you can update the code wirelessly over the air.

And there is two Onbaord Led’s which you could use according to your need like testing your code or something else.

In my case I have used as WIFI indicator that is if WIFI connection is available then both the Led’s will glow else only single Led will glow.

By using this PCB, I will make a small homeautomation system that is internet and manual controlled homeautoamtion system using blynk iot plateform.

In this home-automation system we can control our home-appliances by using blynk smartphone application from anywhere in this world

Apart from this we can also control our home-appliances through manual switches that we generally use in our homes and we can also monitor the real-time status in the blynk smartphone application.

This PCB is compatible for all the smart speakers available in the market like Amazons Alexa, google home and Apples SIRI.

Designing the PCB.

To design the circuit and PCB, we used EasyEDA which is a browser based software to design PCBs.

Designing the circuit works like in any other circuit software tool, you place some components and you wire them together.

Then, you assign each component to a footprint.

Having the parts assigned, place each component. When you’re happy with the layout, make all the connections and route your PCB.

Save your project and export the Gerber files.

Ordering the PCBs at jlcpcb..

This project is sponsored by jlcpcb. jlcpcb is a full feature Printed Circuit Board manufacturing service.

Turn your DIY breadboard circuits into professional PCBs– get 10 boards for approximately $5 + shipping (which will vary depending on your country).

Once you have your Gerber files, you can order the PCB. Follow the next steps.

1. Download the Gerber files –click here to download the.zip file.

2. Go to jlcpcb website and Click on Quote Now button.

3.Upload the gerber file you downloaded in the last step. Upload the.zip file or you can also drag and drop the gerber files.

After uploading the zip file, you’ll see a success message at the bottom if the file is successfully uploaded. You can review the PCB in the Gerber viewer to make sure everything is good.

jlcpcb can grab all the PCB details and automatically fills them for you.

To place the order, click on “SAVE TO CART” button.

Now select the shipping method, the one you prefer and has cost efficient.

Before finalizing your order you can use the promotional code JLC-REBE to get a discount and then click pay.

Let's Make it...!

Now grab all the components whose list is mention below, and soldered on the PCB.

1.ESP32 Chip.

2.Highlink (HLK-5M05).

3.Relay (5volts).

4.Terminal connectors.

5.Optocoupler(PC817).

6.DPDT Switch.

After soldiering rest of components PCB look like this neat, clean and well arranged.

Blynk Application.

Blynk mobile application is available for both IOS as well as Android users.

Scan the above QR Code with your phone and you will get a full copy of this project.

CODE

To flash the code into ESP32 chip, I will use ESP32 development board.

Make the connections according to below schematic.

Make the connections according to above schematic.

before you upload the code you need to enter the ssid and password of your router or hotspot.

And blynk authentication token that is sent by blynk on your registered email id.

Download the code and open in arduino ide.

Now hit upload button after selecting right board and COM Port.

Connection of Switches & Bulbs.

Connect all the bulb and switches as Shown in the Schematics below.

Now your homeautomation system is ready to work.

If you have any question or queries regarding this project please comment below.

Video Tutorial.

Thank you so much for reading.