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. Explained this ESP8266 Arduino Lora IoT-based ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one ...

The whole system has been developed by using Bluetooth technology and smartphone application with indispensable hardware connections like Arduino, relay switching circuits etc.

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 ...

I have built a simple Arduino + ethernet shield connected to a 4xopto-isolated-relay board for controlling each of my 4 sprinklers. I have the 24VAC from the irrigation wall-wart feeding into a ...

Zero - Arduino Try Out From the circuit diagram of the module, it is clear that, apart from the module only a few external components are needed to build a relay-driver circuit.

Light-sensitive Energy-efficient Relay idea: Michael A. Shustov (Russia), Andrey M. Shustov (Germany) In e-zine issue 356 from Friday 8 November 2019 we described an ‘all-transistor’ energy-efficient ...

This simple circuit will solve that problem. It allows 12-volt relays to be operated from 6 or 9 volts, or 24- volt relays from 12 volts. While most normal relays require the manufacturer-specified ...