The 9Volt puts those extra 9-Volt batteries to use, in something other than your smoke detector, as an environmentally friendly LED light who’s ambiance represents that of nice candlelight.

Have a hard time finding a use for the other 9 volt battery you got in that 2-pack? Look no further that Richard Lawson's charming DIY LED light: 9Vo(l)tive. Just stick one of these suckers on a 9 ...

9 volt battery 2 Articles . Hackaday Prize Entry: SnapVCC. July 29, 2015 by Brian Benchoff 59 Comments ... a LED light second, and then a CD. The air arc is probably the most impressive, ...

The transistor then switches on a second BC547, which lights an LED. The whole circuit is built on top of a battery clip so it can be run straight from the top of a standard 9 volt battery.

The process begins with gathering the necessary components: a 9V battery, an LED light strip or bulb, an on/off switch, wire, electrical tape or a soldering kit, and Velcro or adhesive for mounting.