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Electric Go Cart
How to design and build a go kart.
Funky Push Car
Alcohol / Can / penny stove
Floating Dock with Barrels (UPDATED)
Gas to Electric GoCart Conversion - 150cc 2 seater gocart.
USB Solar Charger
Electric Vehicle - A simple lightweight EV platform
DIY Portable USB Solar Charger ($20 - 4 Ports)
NaCade - The Naked Raspberry Pi Arcade Machine
LED Disco Light in a Jar!
Make a Dremel with Custom Removable Attachments!
Watering your plants with an Op-amp
Irrigating your garden with an opamp: The circuit, list of materials
iAmp - CMoy Amp in iPod Package
The Opa! Amp - iPod Amp for Aux-In
Home-made audio amplifier
Make a Simple Audio Amplifier