Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small ...

Firecrown illustrator Kellie Jaeger provides the information needed to wire a Lionel No. 450 Operating Signal Bridge using AC relays. The best to use are single-pole double-throw types. When the train ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

This paper aims to design a digital overcurrent relay with a characteristic of a standard inverse that can comply to the IEC standard 60255. The overcurrent relay which is used to protect one phase of ...

While a Raspberry Pi is a full-fledged computer that can do more complex things than an Arduino microcontroller, it's not the best choice for every project.

In this article, we propose a circuit to monitor the temperature and control a relay over the local WiFi.

A 'not equal to' operator in Arduino is a relational operator that identifies the relationship between the two values at each side of a specific condition.

The Nano Relay is a simple input-output processor to monitor 1-3 inputs and generate 1-2 outputs, the primary one being the driving of a relay. Our custom PCB uses an Arduino Nano 3.0 and a small ...