Here, we are using a 4 relay module because we will only control four appliances. If you want to automate a different number of appliances, you can use a different relay module. There are many relay ...

In this arduino relay control tutorial we will simply learn How to interface a Relay with Arduino. Here we are not using any Relay Driver IC like ULN2003 and will only use an NPN transistor to control ...

Digital pins D3 and D4 of Arduino Board2 are interfaced to relay module (RM1) to switch the appliances on/off. If on pressing switch S1 relay 1 in RM1 gets energised, it means the electrical appliance ...

In this Lora IoT project tutorial, I have shown how to make the LoRa Arduino ESP8266 control relay from the Blynk IoT platform with real-time feedback. In this article, I have covered the following ...

Learn how to build an RFID door lock system using Arduino for secure and smart access control. This step-by-step guide covers circuit connections, coding, and hardware setup to create an automated ...

The 4 Relay Module is another critical component, allowing Twinky to control multiple devices simultaneously.