You can turn old hard drives into speakers! I show you how.
Read MoreCategory: Random Fun

This is what happens when you connect things backwards with 30 Volts.
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So I recently got hold of some 2600F (no that is not a typo) ultracapacitors with an insanely low ESR of 0.7 milliohms, meaning they can discharge hundreds of amps even at low voltages. This video shows you some of the mayhem I got up to, and teaches some important capacitor formulas along the way. […]
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This is a quick and easy hack – if you have an old inket or laser printer, it will have a stepper motor in it. By connecting an LED to the stepper motor, you can make a ghetto hand cranked flashlight.
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Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices.
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12V lead acid batteries are useful for powering many things. But not Raspberry Pis.
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Random video. The colour changes a bit as the current gets turned up.
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My Canon 580EX 2 on full power is VERY bright. Bright enough to burn a hole through a garbage bag!!
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Here’s a piece of Transformers related artwork that I made a few years ago. If you ever watched the 80s cartoon show, you may like it. The hardware is pretty simple – it’s an array of LEDs in series, being PWM dimmed with a couple of transistors. An external 20V supply powers the whole thing. […]
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I had some leftovers from the zener diode video. So I shoved 16V/12A through them.
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Normally rated for 20mA. When 100mA is flowing it turns from green to yellow. At 150mA, it slowly and permanently turns yellowy-orange. At 200+mA it permanently turns red and soon fails.
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This PIC was rated for 3.3 volts. I gave it 16. Now I need new power leads.
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