Behold the Floppotron, a Computer Hardware Orchestra

iStock // ioResearch
iStock // ioResearch

Back in the era when floppy drives came with home computers, PCs made a lot of noise starting up. They made a kind of music as the motors in the floppy drives buzzed and clunked, the hard drive spun up and chattered, and various peripherals slowly ground their way through startup tests. Now one man has turned those tones into an orchestra.

Polish engineer Paweł Zadrożniak built the Floppotron, a synchronized array of obsolete computer hardware programmed to play tunes. The current Floppotron 2.0 build sports 64 floppy drives, 8 hard drives, and a pair of flatbed scanners—most of these items have had their covers removed, apparently for improved acoustic performance.

Zadrożniak harnessed the power of the stepper motors in the floppy drives and scanners. By driving those motors at specific speeds, he can force them to generate pitches that sound a lot like string instruments. The hard drives can be gently overloaded to force the read/write heads to whack against metal guard rails—voila, percussion!

Floppotron 2.0 uses the floppy drives in banks of eight, allowing for volume control—one floppy is quiet, eight playing together is loud, just like an orchestra. Given the eight banks of drives, as many as eight notes can be played simultaneously, each at its own volume. The scanners act more like solo instruments, with their larger motors allowing them to take the lead.

Zadrożniak wrote the Floppotron software during his university classes. It translates MIDI music files—which specify instruments and notation—into a series of discrete commands telling the hardware when to buzz, click, and remain silent. The net effect is of a robot orchestra.

The Floppotron is a little light on bass; in this last song, Zadrożniak manually simulates a kick drum via a clothes washer, a snare drum by whacking a microwave oven, and...well, there's more. Enjoy:

For more Floppotron goodness, check out this playlist.

10 Wireless Chargers Designed to Make Life Easier

La Lucia/Moshi
La Lucia/Moshi

While our smart devices and gadgets are necessary in our everyday life, the worst part is the clumsy collection of cords and chargers that go along with them. Thankfully, there are more streamlined ways to keep your phone, AirPods, Apple Watch, and other electronics powered-up. Check out these 10 wireless chargers that are designed to make your life convenient and connected.

1. Otto Q Wireless Fast Charging Pad; $40

Otto Q Wireless Fast Charging Pad
Moshi

Touted as one of the world's fastest chargers, this wireless model from Moshi is ideal for anyone looking to power-up their phone or AirPods in a hurry. It sports a soft, cushioned design and features a proprietary Q-coil module that allows it to charge through a case as thick as 5mm.

Buy it: Mental Floss Shop

2. Gotek Wireless Charging Music Station; $57

Gotek Wireless Charging Music Station
Rego Tech

Consolidate your bedside table with this clock, Bluetooth 5.0 speaker, and wireless charger, all in one. It comes with a built-in radio and glossy LED display with three levels of brightness to suit your style.

Buy it: Mental Floss Shop

3. BentoStack PowerHub 5000; $100 (37 percent off)

BentoStack PowerHub 5000
Function101

This compact Apple accessory organizer will wirelessly charge, port, and store your device accessories in one compact hub. It stacks to look neat and keep you from losing another small piece of equipment.

Buy it: Mental Floss Shop

4. Porto Q 5K Portable Battery with Built-in Wireless Charger; $85

Porto Q 5K Portable Battery with Built-in Wireless Charger
Moshi

This wireless charger doubles as a portable battery, so when your charge dies, the backup battery will double your device’s life. Your friends will love being able to borrow a charge, too, with the easy, non-slip hook-up.

Buy it: Mental Floss Shop

5. 4-in-1 Versatile Wireless Charger; $41 (31 percent off)

4-in-1 Versatile Wireless Charger
La Lucia

Put all of those tangled cords to rest with this single, temperature-controlled charging stand that can work on four devices at once. It even has a built-in safeguard to protect against overcharging.

Buy it: Mental Floss Shop

6. GRAVITIS™ Wireless Car Charger; $20 (31 percent off)

GRAVITIS™ Wireless Car Charger
Origaudio

If you need to charge your phone while also using it as a GPS, this wireless device hooks right into the car’s air vent for safe visibility. Your device will be fully charged within two to three hours, making it perfect for road trips.

Buy it: Mental Floss Shop

7. Futura X Wireless 15W Fast Charging Pad; $35 (30 percent off)

Futura X Wireless 15W Fast Charging Pad
Bezalel

This incredibly thin, tiny charger is designed for anyone looking to declutter their desk or nightstand. Using a USB-C cord for a power source, this wireless charger features a built-in cooling system and is simple to set up—once plugged in, you just have to rest your phone on top to get it working.

Buy it: Mental Floss Shop

8. Apple Watch Wireless Charger Keychain; $20 (59 percent off)

Apple Watch Wireless Charger Keychain
Go Gadgets

This Apple Watch charger is all about convenience on the go. Simply attach the charger to your keys or backpack and wrap your Apple Watch around its magnetic center ring. The whole thing is small enough to be easily carried with you wherever you're traveling, whether you're commuting or out on a day trip.

Buy it: Mental Floss Shop

9. Wireless Charger with 30W Power Delivery & 18W Fast Charger Ports; $55 (38 percent off)

Wireless Charger from TechSmarter
TechSmarter

Fuel up to three devices at once, including a laptop, with this single unit. It can wirelessly charge or hook up to USB and USB-C to consolidate your charging station.

Buy it: Mental Floss Shop

10. FurniQi Bamboo Wireless Charging Side Table; $150 (24 percent off)

FurniQi Bamboo Wireless Charging Side Table
FoneSalesman

This bamboo table is actually a wireless charger—all you have to do is set your device down on the designated charging spot and you're good to go. Easy to construct and completely discreet, this is a novel way to charge your device while entertaining guests or just enjoying your morning coffee.

Buy it: Mental Floss Shop

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Common Misconceptions About Dreams

If your nightmares look like Henry Fuseli's The Nightmare (1781), we're so sorry.
If your nightmares look like Henry Fuseli's The Nightmare (1781), we're so sorry.
Henry Fuseli, Detroit Institute of Arts, Wikimedia Commons // Public Domain

Contrary to what Ebenezer Scrooge initially thought in Charles Dickens's A Christmas Carol, nightmares aren’t merely a side effect of eating cheese before bed. In fact, studies have shown that pre-sleep snacks—dairy or otherwise—probably don’t influence your dreams at all. But even if you can’t blame your latest wacky snooze vision on last night’s midnight helping of chicken nuggets, you can try to trace it back to some stressor from your daily life.

Since dream interpretation isn’t an exact science—and sleep in general is one of science’s murkier territories—quite a few myths have arisen about what, why, and how we dream. In this episode of Misconceptions, Mental Floss's own Justin Dodd walks us through some of the more common fallacies about dreams. (And if you’re convinced you never dream, well, he has some news for you on that front, too.)

For more videos like this one, subscribe to the Mental Floss YouTube channel here.