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how to make a homemade grow light

How to make a homemade grow light

I made my light with four modules, to make the same size as me you are going to need:

This project requires a lot of soldering so it’s a perfect project for learning or honing your skills!
Rip open your USB cable and trim away the shielding and the data lines. The data lines are colored green and white. To avoid a short circuit, trim these cables at different lengths.

This light is perfect for indoor gardening to make sure your plants get enough light for photosynthesis.
A photon of light will travel a light year with no loss in power. The issue hear is not power or spectrum. Instead it is a mater of focus and the size of the light. The light from LEDs spreads out as it travels and as it spreads out the brightness of the light drops. Many high end LEDS use lenses and reflectors to control the spread of light. The other aspect of this you want light to get past the outer leaves to reach leaves closer to the stem of the plant. You do this by increasing the area of the light source. A small 3by 3″ LED array will only light up the outer layer of leaves.
If you have access to a 3D printer, I have included two STL files to print a holder for your lights.
Also some plants use yellow and orange light to guide gowth. While many plants do well with just red and blue, some don’t. My orchids did not do very well with just red and blue. But when using white LED of about the same overall power level they had better growth
Question 1 year ago on Step 1

  1. 40 red LEDs
  2. 16 blue LEDs
  3. 20 56 ohm resistors
  4. 16 100 ohm resistors
  5. 2 blank circuit boards – 5 x 7 cm
  6. USB cable
  7. USB charger
    1. Any power source with 5 V and more than 720 mA will do
  8. Hookup wires

DIY Plant Grow Light: In this instructable I'll show you how to make your own grow light for indoor gardening!The light was inspired by what NASA uses to grow lettuce aboard the ISS.This light is perfect for indoor gardening to make sure your plants get enough light fo…