Raspberry Pi enthusiasts searching for a way to control appliances or projects directly from their smartphone may be interested in the PiRelay Raspberry Pi relay shield, which comes complete with a ...

We’ve seen some of [Connor]’s work before, and it looks like he’s now turning to product design. He’s come up with an adapter for the Raspberry Pi to control a few wireless wall socket relays, ...

Raspberry Pi enthusiasts building projects incorporating relays may be interested in a new piece of hardware created by Sequent Microsystems, offering up to 32 relays in a single project. This ...

To drive a relay from the Pi, one needs to cobble up a fairly simple circuit where the 3.3V GPIO pin turns on a transistor that drives the relay. This is such a common requirement that I figured ...

If you’re building a CNC router, laser cutter, or even 3D printer, you’ll usually be looking at a dedicated controller. This board takes commands from a computer, often in the form of G-Code, and ...

This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working ...

How the Raspberry Pi can be used within the access control and building security industries. Overview of what constitutes a good solution for building access control. A glimpse into how Pi was used in ...

This book is about DC electric motors and their use in Arduino and Raspberry Pi Zero W based projects. The book includes many tested and working projects where each project has the following ...

The process requires a bit of hacking together, but the end result is a Raspberry Pi-powered light system that you can use your phone to control. The Raspberry Pi runs a strip of LEDs, and the web ...

At $35, the Raspberry Pi is a fantastic little computer, but when you add in the cost of a display, mouse, and keyboard, things get a little more expensive. Good thing you don’t really need them. With ...