Category: Random Fun

HDD speakers

Hard Drive Speakers

You can turn old hard drives into speakers! I show you how.

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exploding electronic components

Exploding electronic components in HD!

This is what happens when you connect things backwards with 30 Volts.

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Ultracapacitors

Fun with ultracapacitors!

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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hand cranked LED flashlight

The world’s simplest hand cranked LED flashlight

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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laser tachometer

How to build a simple laser tachometer

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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Raspberry pi overclocking failure

Raspberry Pi “overclocking” failure

12V lead acid batteries are useful for powering many things. But not Raspberry Pis.

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Blue 0603 LED

Blue 0603 LED under microscope

Random video. The colour changes a bit as the current gets turned up.

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Camera flash

Burning stuff with a camera flash

My Canon 580EX 2 on full power is VERY bright. Bright enough to burn a hole through a garbage bag!!

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Transformers LED artwork

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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Diodes melting

Diodes melting

I had some leftovers from the zener diode video. So I shoved 16V/12A through them.

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Green LED turns red

Green LED turns red!

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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Microcontroller on fire

Microcontroller on fire

This PIC was rated for 3.3 volts. I gave it 16. Now I need new power leads.

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RAM overclocking failure

RAM “overclocking” failure

I love the smell of DDR in the morning.

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burning resistor

Resistor burning slowly

Sped up by 3x to alleviate boredom.

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RGB LED

RGB LED under microscope

Clear shots of all 3 dies in an RGB LED.

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