Latest Relays Articles and Videos

This object detection toy will keep your cat's head spinning for hours!

This object detection toy will keep your cat's head spinning for hours!

Today demand for IoT devices is rapidly growing. What are inside of an IoT power strip? Find out in this teardown!

Today demand for IoT devices is rapidly growing. What are inside of an IoT power strip? Find out in this teardown!

In this project, the reader will learn how to build and program a desktop industrial automation trainer for…

In this project, the reader will learn how to build and program a desktop industrial automation trainer for experimentation in robotics, motor, and process control system concepts on their workbench.

In this week’s Teardown Tuesday we are going to take a look at an accessory that will allow you to connect your garage…

In this week’s Teardown Tuesday we are going to take a look at an accessory that will allow you to connect your garage door opener to the internet, the Garageio!

Soldering surface mount components by hand can be done, but reflow soldering in an oven is much quicker and produces more…

Soldering surface mount components by hand can be done, but reflow soldering in an oven is much quicker and produces more consistent results. Building a microprocessor controlled reflow oven is well within the abilities and budget of many hobbyists.

In the systems where custom sensors are required, it's imperative that the designer quantifies the environmental,…

In the systems where custom sensors are required, it's imperative that the designer quantifies the environmental, mechanical, electrical, and magnetic parameters of the entire system so that a sensor which meets those operating conditions can be selected.

Typical PLCs are very expensive, but never fear: cheaper versions exist!

Typical PLCs are very expensive, but never fear: cheaper versions exist!

In this article, we'll build a sound-activated switch that can be opened and closed with a double clap.

In this article, we'll build a sound-activated switch that can be opened and closed with a double clap.

The FRDM-K64F is a development platform which utilises the MK64FN1M0VLL12 microcontroller. This tutorial includes how to…

The FRDM-K64F is a development platform which utilises the MK64FN1M0VLL12 microcontroller. This tutorial includes how to download a simple blinky example onto the FRDM-K64F using the ARM mbed online IDE and KEIL MDK. Details of the GPIO module configuration are included.

Learn how to put together your own toaster oven controller with a handful of inexpensive, through-hole parts. The…

Learn how to put together your own toaster oven controller with a handful of inexpensive, through-hole parts. The emphasis is on safety, low price, and minimal modification of the toaster oven.

Learn how to use a rotary encoder in an Arduino project. Rotary encoders are electromechanical, electro-optical or…

Learn how to use a rotary encoder in an Arduino project. Rotary encoders are electromechanical, electro-optical or electro-magnetic devices which convert rotational motion into digital or analog information.

Part 3 introduces the if...then, endif, gosub, and return PICAXE BASIC commands. It is the third article in a multi-part…

Part 3 introduces the if...then, endif, gosub, and return PICAXE BASIC commands. It is the third article in a multi-part series on writing PICAXE code.

In this article I will discuss what switch bounce is and some ways to deal with it. First I will take you through the…

In this article I will discuss what switch bounce is and some ways to deal with it. First I will take you through the theory, and later I will show you some ways to handle it in both hardware and in software.

An in-depth look at transformer isolation. Electrical isolation is necessary to protect circuits, equipment, and people…

An in-depth look at transformer isolation. Electrical isolation is necessary to protect circuits, equipment, and people from shocks and short circuits, as well as to make accurate measurements. Isolation transformers are one way to go.

The digital inputs and outputs (digital I/O) on the Arduino are what allow you to connect sensors, actuators, and other…

The digital inputs and outputs (digital I/O) on the Arduino are what allow you to connect sensors, actuators, and other ICs to the Arduino . Learning how to use the inputs and outputs will allow you to use the Arduino to do some really useful things, such as reading switch inputs, lighting indicators, and controlling relay outputs.