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Curved Circuit Board Art: Make a Touchless Touch-Switch LED Lamp

With a wave of the hand, turn on a USB powered touch-switch LED Lamp. You do not have to actually touch the sensor. It is so sensitive, it will activate by the presence of a finger an inch or two away....

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Li-Ion Battery capacity tester (Lithium power tester)

=========== WARNING & DISCLAIMER ==========Li-Ion batteries are very dangerous if not handled properly .DO NOT OVER CHARGE / BURN / OPEN Li-Ion BatsAnything you do with this information is your own...

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Rechargeable Battery Capacity Tester

Do you have a pile of AA rechargeable batteries in your drawer? Some are old, some are new, but which sets would you bring with your camera on your next trip, and which ones are past their useful life?...

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Arduino True Battery Capacity Tester (Li-Ion/NiMH/NiCD/Pb)

 If anyone saw my last instructable "Simple Li-Ion Battery Power Tester" they can now upgrade to a computerized hi-tech version that is capable of measuring almost any type of rechargeable or none...

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Windbelt Redux 21st Century Micro Power Generation

This is my second iteration of Shawn Frayne's Windbelt generator, my first can be found here. This version is designed to utilise cross ventilation in a house. A Windbelt is an oscillatory wind...

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High Power LED Driver Circuits

High-power LED's: the future of lighting! but... how do you use them? where do you get them? 1-watt and 3-watt Power LED's are now widely available in the $3 to $5 range, so i've been working on a...

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Making the SilverMAX Colloidal Silver Generator

My mother in-law was getting into the use of Colloidal Silver as a healing salve for cuts and even burns. Silver is known to have antiseptic properties, and if you are into the use of Colloidal Silver,...

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Make Professional Quality Knives at Home

Custom knifes are a staple of most professional cooks and chefs and can range in price from $200-$3000; however, you should be able to complete one knife for about $10 worth of steel and without power...

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Durable Biochar Producing TLUD Camp Stove

TLUD - Top Lit Up Draft stoves are an innovative technology for high efficiency, low emission conversion of woody biomass to biochar with plenty of useful heat available during the process for cooking...

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