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How To: Wire a 555 timer chip for PWM

This demonstrates how to wire a 555 timer chip for Pulse Width Modulation. Items used: solderless breadboard, 555 chip, 510 ohm resistor, 100k ohm variable resistor, 1 RGB LED at 20-25ma, wires, and 9v battery. And those vertical lines are what i mean in terms of what you can see only on the camera. You can see the led light of course without the camera.

How To: Build a PWN circuit to control power that can dim an LED, control a motor etc.

Many types of circuits are useless and less useful if you cannot control the amount of power going through them. For that, you need a PWN (pulse with modulation) switch. This electronic component will let your control the power going through the circuit, enabling you to dim LED lights, control the speed of a motor, and other useful tasks. This video will teach you all PWN switches and how tom make your own.

How To: Make a harsh lead synth track with dissonance for hard techno in Reason 4

Nowadays digital and analog synthesizers can produce a nearly infinite number of sounds, and many of them sound terrible to most people. If you find yourself more in the Trent Reznor music camp though and love making dystopian, harsh sounds in your music, watch this video. It will teach you how to make a really harsh, dissonance filled lead synth track in Reason 4. Great for glitch, industrial, and other abrasive electronic styles.

How To: Play Led Zeppelin's "Stairway to Heaven" on ukulele

Want to play Led Zeppelin's "Stairway to Heaven" on the ukulele? Learn how with this free video ukulele lesson from Ukulele Mike. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get started playing this classic roc...

How To: Perform the Aces All Again card trick

Learn how to do an amazing card trick that will impress your friends. The magician starts out with a quick example of a trick that everyone has probably seen and then leads into a more advanced card trick, called All Aces Again. He first performs the card trick then he shows us how the trick works. This particular trick takes a little preparation and no need to shuffle so that even a child with small hands can perform! Once the magician completes the card trick, he shows us how to lead into t...

Limited Time Only: Google Play Apps & Games on Sale for a Dollar

Now is the time to act if you've been in the market for some must-have Android apps but felt like the price was a little out of your range. The Google Play Store is running a sale so you can pick up some high-quality paid apps—including the popular Nova Launcher Prime and Poweramp Music Player, among many others—for just $0.99 each. While there are quite a few solid apps here you should try—and with a two-hour refund window, why not try them all—here are our favorites you should seriously con...

How To: 10 Coding, SEO & More Courses on Sale Right Now That Will Turn You into a Pro Developer

This holiday season, give yourself a gift that will keep on giving: a new web development skill. Whether it's to secure lucrative freelance work in the new year, bolster your résumé, or have fun with some frankly outrageous discounts on online course bundles right now (up to 99% off), there's nothing better you can do with your free time. Your future (pro coder) self will thank you.

How To: Learn to Code Your Own Games with This Hands-on Bundle

We've shared a capture-the-flag game for grabbing handshakes and cracking passwords for Wi-Fi, and there are some upcoming CTF games we plan on sharing for other Wi-Fi hacks and even a dead-drop game. While security-minded activities and war games are excellent ways to improve your hacking skills, coding a real video game is also an excellent exercise for improving your programming abilities.

How To: All the Legit Ways to Get Free Games on the Google Play Store

I think we all like the idea of getting paid games for free with minimal effort. Typically, though, anything claiming to help you do that is either illegal or a scam. But there are actually quite a few no-fuss methods that can get you paid games without going too far out of your way. From checking notifications to discovering hidden offers, you might have something waiting for you.