GravityLight t1

Short test of the output of the gravity light.

On the low setting, a joule thief can be tuned to get 15 minutes of dim light per foot of drop. The weight, seems as though it almost comes to a dead stop, from the resistance.

Max output is around 0.1 watts.

The leds I’m using are Nichia NSPW510HS-K1 5mm led, which get around 170 lumens/w.

@10 mA 2.6v = 6900 mcd

@20 mA 2.8v = 13800 mcd

@40 mA 2.9v = 26220 mcd

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