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Repurpose An Old PC Power Supply For Use With Your Electronics Projects

It turns out that the power supply unit, or PSU, of a standard desktop computer is the perfect device to energise most of your DIY electronics projects. With rails for 12, 5 and 3.3 volts, it suits a wide range of hobbyist gadget demands. The following guide will show you how to transform a decommissioned PSU into a tweakable DIY power source.

Build Your Own Tricked Out Wrist Watch

Smart watches are fine, but they really don’t capture the DIY spirit. Over on Instructables, user benhur.gonvalves shows you how to build a smart little watch using an Arduino that comes packed with a pedometer, temperature reader, compass and more.

Build Your Own Motion Control, Time-Lapse Photography Rig

Timelapse photography is great, and it’s certainly something we’ve seen DIY solutions for before. Over on Make, they show off another way to do it, using an Arduino.

Build An Indoor Garden Monitor For Checking Light And Soil Conditions

If don’t have much of a green thumb, this Arduino-based monitor lets you know if your indoor plants are getting enough water and light. And even if you don’t need the gardening help, it’s a nifty little Arduino project.

Unlock A Door With An RFduino And An Apple Watch

If you’ve ever wanted to magically unlock a door with a quick tap on your wrist, this DIY project is for you. Using an RFduino and some special door components, Marc Jensen, James Squires and Shawn Roske at Make came up with an interesting use of the Apple Watch.

Build A Wireless Alarm Clock With An Arduino

Alarm clocks are cheap and abundant, but they’re pretty boring. If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino.

Build An Arduino-Powered DIY Tracking System To Track A Stolen Bike

Unlike cars, bikes are difficult to track if they are stolen. If you don’t mind putting in the work, Instructables user stbennet shows you how to build your own tracking system with an Arduino.

Build An Exercise Bike That Won't Let You Watch TV Unless You Pedal It

Exercising is all about finding motivation. This custom bicycle stand you can build at home will let you watch TV while you work out, but only if you keep pedalling.

Build A Kickass Robot Arm: The Perfect Arduino Project For Beginners

The Arduino is a cheap, fun way to get into building your own electronics, but it can seem daunting to get started. Here, we’ll show you how to get a start-to-finish Arduino primer with a killer project: building a sweet robot arm.

Turn An Arduino Into An Apple II, Because You Can

You probably don’t need an Apple II to speak of. But that’s no reason not to do something if the mood strikes you, which is surely the mentality behind this particular project.

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