With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
We have a be nice comment policy. Please be positive and constructive.
We noticed you attached photosto your comment.
wow. I was taught, before the "new math" that DC voltage always flows from negative to positive. But I am old. That may have only been for DC XFMRS prior to Y2K...
Rechargeable power crank radio prepper mod shortwave emergency cell phone charger batte…
chris _from _canada
Pocket sized fireworks detonator / model rocket launcher
DIY Torch light
Double Capacity MintyBoost with 4-AA Battery Holder Modification
Franken-Saw (a.k.a. how to use a DeWalt battery with a Bosch reciprocating saw)
How Do Batteries Work? (+DIY Homemade Battery)
Simple Costume Lighting
Light the Lamp - Electronics
Handy Polarity Checker
Posted:Feb 17, 2009
Join 2 million + to receive instant DIY inspiration in your inbox.
Download our apps!
© 2016 Autodesk, Inc.