Check out this $10 gravity powered light designed like a grandfather clock to replace kerosene lanterns.
Looks like a really neat idea. I wonder why it took so long for someone to come up with it. :)
That’s really nice
Seems to me it’s the same principle as the “crank light”…only presented as a weighted “gravity-chain-clock of yesteryear.
Exactly. Off the shelf parts, so it should be cheap, and not much fancy to break. Things will last for ever.
If they were selling them now, I think I’d buy 15 of em 
Good idea. Would make a good camping light.
Excellent idea. Hope they are using some decent high efficiency leds.
I was watching this myself. Imagine if they can like put a CPU heatsink & XM-L. I wouldn’t mind lifting 50 bags of 50 lbs each to light some monster light.
Cool light and would also be good for camping. There is also a program in Africa that gives out or sells rechargeable battery powered lights. The batteries are recharged by pedaling a stationary bike. One villager owns the bike and charges a small few to recharge batteries.