Lasers are one of the coolest things that you can build yourself from a pure sci-fi fantasy standpoint. They're not easy though, but this video will help you somewhat by describing different types of laser diodes and how to connect them to a power supply.
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Charge your small electronics with a solar powered charger
How To:
Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore
How To:
DIY Stick Welder from Old Microwave Parts
How To:
Hack a coin operated laundry machine
How To:
Make a PVC Hand Pump to Move Water, Compress Air, & Create Vacuum
News:
Pedal-Powered EL Wire Night Bike Light
How To:
Create cheap WiFi antennas for better reception
How To:
Use a breadboard, also known as a protoboard
News:
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How To:
Extract an RFID chip from a card & make it wearable
How To:
10 Unique & Practical Ways to Repurpose Your Old Hard Disk Drives
How To:
Make a Super Cheap One-Way Check Valve
How To:
Build a low cost portable hamstick antenna
How To:
Turn an Automatic Air Freshener Dispenser into a Silly String Launcher
HowTo:
Make Your Own Tron Costume With Electroluminescent Wire
How To:
Make a Spot Welder for Cheap!
How To:
Build a Deadly Motion-Activated Airsoft Turret Gun
How To:
Build a power supply for electroluminescent (EL) wire and displays
How To:
Make an Infrared Mask to Hide Your Face from Cameras
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Build a hydrogen generator
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