NYC Resistor

Grass dont need green led's, its better idea to use yellow leds instead green, because in this case we fill up spectrum what is more need for growth. (Grass is green because it absorb red, and some blue "colors" of light.)

I'm wondering now what would happen if you put the leds just above the dirt, pointing up. Gravity vs. phototropism: FIGHT!

this is seriously awesome. We need to sell kits of these :)

The green LEDs give the light a more natural color. Before building my own light, I tried a commercial LED grow light which was mostly red with a little bit of blue. It worked very well, but the grass looked terrible.

At one point I considered adding a feature that shuts down the green and blue channels at night to save energy. But now that it's all built and the grass is growing, I'll probably never get around to adding it.

wants.

You don't need a green led for plant growing.
Green light doesn't participate in photosynthesis.

Dave, that's freaking fantastic.

OMG I want one!!!! It really works!!!