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led module red Customers Reviews

  • So Far So Good

    posted by jlinnema

    Incredibly easy to solder due to the extended legs with through holes. Quite bright. Cool runningSeems to be the correct colors for plant response
    I received 4 of these just a few days ago. Currently running a 19.5V constant voltage supply, 3.3 OHM (10 W) resistor, and then two grow lights in series. The lights are affixed to a 3/8" thick plate of Al with an old P4 heatsink on the other side. Ran for 8 hours with minimal heat buildup and the basil seemed to respond well (went from curved towards the window to vertical while on)
    Much cheaper than purchasing a combination of 8 red and 1 blue LED, and so far seem to be functioning as expected.
  • Great Light

    posted by cozzycovers

    This light is extremely bright.The build quality is solid.Wavelength most likely around 635.It's must be at least 2000lm (I'm sure its more). Though you have to take into account Lumen is not the right measurement for red light.
    This driver works well with the light and stays cool: 156230. I used this reflector but your going to have to cut off 2 of the guides (not hard) 39963. I also used this lens works great if you need to focus the light it has a large spread:13569. The labeling on the package says 625 to 635 I think. the color is a orange red. but for sure more red than orange. Which makes me think it could be 625-635nm. I got this as a joke for a back light on a bike but its even too bright for that. Don't Look into the light!
    Get this if you want a super bright red light and very low energy. This is not a blood red, its has more orange.
  • Red and blue light, perfect for plants growing

    posted by mingos3

    Works great.A lot of lightLow consumptionRed and blue light wich is the best color spectrum to assimilate chlorophyllVery lightweyght
    The item has 4 screw holes and 2 holes more, I suppose that the 2 extra holes are to connect the cablesThe back side is coated with copper
    Bright light but so much concentrated at a given point. Useful color light: blue and red color (460 nm and 680 nm ) have the appropiate wave lenght to be absorbed for the plants
  • Works very well

    posted by slePP

    This is a very low cost module for what is on it. With all the buttons, dual colour LEDs and full 8 digit display, an awful lot of information can be conveyed. I used it for a ping time tracker, using the LEDs as a bar graph and the actual results on the LED digits.These can be chained to multiple units using the included cables.
    Buy a few, you'll find all sorts of little uses for them.
    Chaining three together to an Arduino makes for a nice little stock ticker.
  • a good product.

    posted by JakoMeister

    it is the cheapest Mini 8 x 8 Red LED Display i have found. Other products similar like this costs at least 10 dollars. It is easy to use with your DIY projects with arduino or raspberry pi (or another). It works fine. A good product with a great price.
    So you need a lot of wires to plug all the pins, i suggest you, to use a controller like the mcp23017 or something similar like this (with a only mcp23017 you can use both Mini 8 x 8 Red LED Display at the same time).
    none.

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