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Simple Manual Magnetometer Calibration
There are several types of cheap magnetometer now available, which you can use to sense a compass direction, but all of them (as far as I know) need calibration before you can get sensible results. In...
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Automatic Magnetometer Calibration
There are several types of cheap magnetometer now available, which you can use to sense a compass direction, but all of them (as far as I know) need calibration before you can get sensible results.I...
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Plug'n'play Neopixels
Don't you just love those Adafruit Neopixel rings? I have the 12, 24 and the massive 60 pixel rings, and up until now all my sketches have been configurable to run with any of them, with the size...
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Glowy Disco Badge
In this project we'll be making a fun glowy badge which lights up with different colours and in patterns which respond to your movement. Wear it to a party or a disco and bask in the admiration of all...
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How to service a sewing machine
Huge numbers of sewing machines have been manufactured over the years. The older vintage machines are virtually indestructible, indeed one highly skilled and experienced seamstress told me that she...
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The Small Hadron Collider
So you can't afford a Large Hadron Collider of your own? No, I can't either. Anyway, where would I put it? I've got enough clutter around here already.So I decided to build a Small Hadron Collider, and...
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Pedestrian Crossing
I put this project together as a simple Python coding exercise on a Raspberry Pi for 12 - 15 year old students but it can make a good first Raspberry Pi project for anyone wanting to learn about...
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USB LED Tester and Breakout
If you're anything like me, you've probably got various LEDs knocking around left over from previous projects or salvaged from equipment. Some of them you might have had for years, and others might be...
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Automatic cat flap monitor with intrusion detection and dissuasion
If your cat is micro-chipped you can get a special cat flap which reads the microchip and allows only your cat to come in. But it's not cheap.For a while we've been leaving our cat flap open and...
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Fibreoptic Christmas Tree Upgrade
We've had one of those fibre optic Christmas trees for some years. The base contains a 12V halogen reflector bulb, and a coloured disk driven by a motor is placed between the bulb and the base of the...
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USB Volume Control and Caps Lock LED - simple, cheap, extensible
I'm not the first person to publish an Instructable for a USB volume control, but I think this one is about as simple and cheap as it gets, and at the same time can be extended at minimal cost to...
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How to Build Arduino Weighing Scales
At the Restart Project in London we hold repair events where members of the public are invited to bring in all manner of electrical and electronic items for repair, so as to save them from landfill. A...
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Build a Better Raspberry Pi Power Button
It's very easy to make a Raspberry power-off or shutdown button. There are lots of such projects on the web and a few here on Instructables, but none of them (that I can see) tell you when your Pi has...
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