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Grow Light Feather Wing

A minimalist grow light that is compatible with the Adafruit Feather Huzzah dev board.

One of my previous projects was a hydroponic system for growing strawberries, for which I used a grow light from IKEA. But one thing I didn’t consider while building it was that plants, just like humans, need breaks too. Light-dark cycles are very important for plants, and constant light exposure may actually harm them. Also, the plant’s light needs vary depending on the type of plant or its growing stage. For example, red light is more important for the flowering & fruit production stage, while blue light is important for strong stems and leaves.

So I came up with this miniature grow light, which can be used with the Adafruit Feather Huzzah dev board. It can separately adjust the intensity of the blue and red lights using PWM, or it can control the daily amount of light, all of this remotely!

Since this is quite small, I think it would be ideal for growing some microgreens or herbs.

The Feather Wing powers both the LEDs and the Adafruit Feather Huzzah (there is a 5V regulator on the back), so there is no need to split the power supply for both boards. You’ll need to use a 9V/12V and 2A source.

Also, the blue & red LEDs can be individually controlled through GPIOs 15 & 16 of the Feather.”

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