Christian Cawley

Christian Cawley spends a lot of time with Raspberry Pis and scours the web looking for interesting DIY electronics projects and news for ElectroMaker. He's currently trying to show his 7 year old son how to get to grips with Scratch, but so far to no avail.


Launch your own Cultural Probe with an Arduino-powered TaskCam

DIY cameras are all the rage thanks to the existence of compact and affordable SBCs, but few have a real purpose behind them, beyond proof of concept. So what makes this Arduino Uno-powered camera any different?

Arduino-powered Active-tracking Solar Panel

Solar panels are more common these days, whether arranged in fields as collection arrays, on the roof of homes, or as part of your camping or festival gear to keep mobile devices topped up.

Retro-Styled GTA Radio Powered by Raspberry Pi

A video gaming behemoth that has relied on controversy since its early days, the Grand Theft Auto series nevertheless has more to it than ‘steal cars and shoot’.

Don’t Get Caught Out By Rain with this Arduino-Powered, Water Detecting Umbrella!

We’ve all been there. You’re out and about, on a sunny day, when all of a sudden the clouds gather and it starts to rain. It’s not a light shower, either, but that apocalyptic type of rain storm that looks like all the rain in the world is going to fall before it stops.

Create a Low Budget Smart Trash Can with Arduino

Smart trash cans were all the rage a couple of years ago. The idea is simple; a sensor detects movement or the presence of trash and triggers a servo to open the lid of the trash can.

Turn Your Raspberry Pi into a NODE Mini Server

If you’ve ever tried hooking up a hard disk drive to your Raspberry Pi, you’ll be familiar with the mess it can create. Both devices need a power supply; then there’s the USB cable from the drive to the Pi. Perhaps you tried using an external HDD housing; perhaps you prefer something more bespoke, like the Western Digital WDLabs PiDrive.

Is the Bathroom Free? Find Out with Occup-Pi!

Need to find out if the bathroom is free or not, without negotiating a flight of stairs, or meandering along the corridor?

Raspberry Pi and Arduino Revive Old Doctor Who K9 Prop

Ever wondered what happened to the Doctor’s robot companion, K9? The Time Lord’s best friend has made a handful of appearances in Doctor Who’s 21st century revival, but since 2010 he’s been notable by his absence on screen … (we’ll ignore the fact he was redesigned and given his own TV show.)

Measure Your Skateboard Speed and Distance with a Raspberry Pi

“...I like to skate and cruise around. While I'm cruising, it would be handy to see how much distance I've travelled and see my speed.”

Ready for the DiddyBorg v2 Robot Kit?

Available in two colours (purple for power, red for speed), the DiddyBorg v2 Robot Kit will take your Raspberry Pi on a ride it will never forget!

What Can You Do with an RGB LED Matrix Shield for Arduino?

Looking for a display option for your Arduino project? Perhaps a compact LCD or an array of LEDs will do the trick, especially if you’re building something decorative.

Can a Raspberry Pi Help Protect Coral Reefs?

We’ve seen the Raspberry employed in countless unique ways since the little computer arrived, but did you ever imagine that it could help to save marine life?

Build a Doctor Who Themed TARDIS Doorbell

Doctor Who and Raspberry Pi-based projects go hand in hand. Both are British, and both have links to Cambridge (writer Douglas Adams studied there, and was Doctor Who script editor at the time Hitchhiker's Guide to the Galaxy hit the airwaves).

What Can You Do with an Adafruit ItsyBitsy M4 Express?

Looking for an ultra-compact project board that is compatible with Arduino IDE and CircuitPython? Well, if you can get your hands on an Adafruit ItsyBitsy M4 Express, you might just be in luck...

PiParp: Prank Your Friends with a Parping Raspberry Pi Whoopee Cushion!

The whoopee cushion has been upgraded. No longer a rubber bladder filled with air (or, at times, a piece of foam), it has been enhanced and is capable of playing any noise you can think of, thanks to a Raspberry Pi.

DoggoBot: An Arduino Controlled Cardboard Pet

It’s tough to build a robot without spending a load of money on the body. Some builders buy kits; others use 3D printing. But what about cardboard?

Awesome Star Wars LED Backlit Movie Poster with Arduino and Neopixels

Perhaps some sort of frame is the answer for your movie (or TV show, or pop group) posters ... and if it is, why stop with a bit of wood and perspex? Why not add a backlight, just like a poster found outside a cinema?

Astonishing Google NSynth Device Built on Raspberry Pi

Looking for a totally new sound? You may have just found it. A couple of Google projects have collaborated to produce the NSynth Super, a Raspberry Pi-powered device that uses what has been coined “neural audio synthesis” to analyse the sonic characteristics of source inputs to create entirely new musical voices.