In this project, we are going to build the board by using this board, you can control up to 4 Appliances via Relays & also you can monitor room temperature & Humidity via DHT 11 sensor in your smartphone using the Blynk app.

If you are using Wemos D1 mini & Blynk app.

I highly recommend that you should first take a look at

How to control wemos D1 mini using Blynk Instructables.

Step 1: Watch the Video!

The video gives you all the information you need to create this project, But you can get some additional information in the next steps.

Step 2: Required Components!

1) Wemos D1 mini

2) Relay 5V X 4

3)DHT 11

4) LED's X 4

5)Transistors BC547 X 4

6) 3 Pin TPC connectors X 4

7) 2 Pin TPC connector X1

8) Diodes 1 N 4001 X 4

9)Resistors 470 ohm X 4

You will get all these components from AliExpress or Local electronics Shop.

Step 3: Create the Circuit!

for this project, I have already designed the PCB layout using Easy EDA online software.You can check out PCB layout here.&Feel free to modify this layout according to your needs.

I got 10 PCB's from JLC PCB only for 2$.They provide very high-quality PCB's at very low rates.

Download Gerber file.

Goto JLC PCB add the Gerber File & then place the order for PCB's