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Well I'm already finished with the battery and such... it charges via the cellphone charger just fine despite the nearly 2V difference. The battery will last (on a full charge) at least 3-5 hours.. I have yet to run it dead though... so more testing later will give me more exact numbers. I also ...

So... I got bored earlier and tried out a hack I found on Hack-a-day (who frequently showcases Heck's works) about hacking an Elefun. For those who don't know, elefun is a kid's toy that uses a fan to shoot small fabric butterflies into the air. It runs on 4 C batteries, so jamming a nice 6VDC ...