Posts Tagged ‘leds’

Here’s a simple problem: “How do you make an LED turn on when it gets dark?” You might call it the “nightlight problem,” but the same sort of question comes up in a lot of familiar situations– emergency lights, street lights, silly computer keyboard backlights, and the list goes on.

You have most likely heard of a potato battery, a lemon battery, an earth battery. Well here we present a plant battery powered LED light.

A mud battery is made with a zinc or graphite anode (the positive terminal), buried in mud, and a cathode (negative terminal) in the seawater, both connected by a copper wire. Here we take a look at how your backyard could supply you with energy to light your garden.

I recently decided that I was going to use one of the old bases that was used for a CFL, to now make a some of my small leds work with 12 volts.

I wanted to know what all the fuss was about when it came to these jumbo sized leds so I bought a package of them and started to play.