This video shows the build of a super bright 100W LED flashlight in PVC pipe housing.Main parts bought from ebay. The battery of this flashlight came from 18650 lithium cells removed from dead laptop batteries.The other materials required for this build are 100W LED COB chip,100W LED Reflector, lens, lens bracket kit,DC to DC boost converter 250W,DC to DC step down (buck) converter.Some parts bought at local electronics or hardware store.Rest all stuff had lying around.The other video shows the build of the 22V 6Ah battery pack from dead laptop batteries.
- DIY Video: How to build an Efficient Cold Water Powered Radiant Air Cooler that uses no electricity. Turns Cold Water into Cold Air!!
- How to build a Simple Homemade AC Air Cooler using an Old Juice CartonThis video shows the build of a Simple Homemade Air Cooler using a Used Tropicana half gallon Juice carton.This desktop sized unit works very well and couldn't be simpler to makeThis is made using made a "half gallon" (specifically 59oz./1.75L) juice carton, 80mm DC fan (blue-lit), 1.5" PVC pipe coupler and a 3/8" square wooden dowel.It holds about 2 ice-cube trays worth of ice at a time (and it has a built-in drain! so as ice melts you can drain the ice-water into a glass for a cold drink). Thisonly took me 10 minutes to make it. cost about $8.50.This can be run using a 12v solar panel (2.4 watt or higher), a 12v battery or wall current (just use an ac to dc transformer that puts out 12vdc).
- DIY Video : How to build an Off Grid DIY 12 Volt Washing Machine from junk parts and pieces laying around