DX  » view all diy square » diy square

diy square

Purchase the latest diy square with wonderful pricing At DX we strive to provide the best service possible for our customers, with a prompt and helpful response. Read independent customer reviews to see just how large and popular DX online retail website is.

diy square Customers Reviews

  • Bright LEDs

    posted by bradley90

    These are super bright RED LED modules. With only a 10 Watt dissipation, it is really easy to mount to a small heat sink with a small fan and not worry about over heating the modules. These modules would make fabulous emergency back lights. By keeping the amperage below 500ma, a smaller heat sink would be required and a simple constant current source could be constructed using a 78LM05 voltage regulator and one resistor. No fan would be required
    None - Just great LEDs
    Bottom line, for the money, these are awesome LEDs. They can be used in interesting DIY projects like LED communications or theme lighting.
  • Huge light output for its size

    posted by BjornR1989

    + Very high light output, comparable to a 500W halogen bulb+ More energy efficient than halogen lamps with similar light output+ True cold white light+ Compact design
    When in doubt what the correct polarity is, a regular multimeter switched to diode measurement mode will not be sufficient to test the polarity since the module consists of many light emitting diodes in series. The voltage drop simply is too high.Use a current limited bench supply and slowly turn up the voltage.I sure hope it'll outlast multiple regular light bulbs.
    Lots of light at a reasonable price. Just make sure to choose the right constant current power supply.
  • Worth its money but not the best

    posted by emzi01

    Really Cheap. Does its work - produces light.
    Needs very effective cooling. It might be reasonable to buy more expensive emitters to have less trouble with heating
    Buy if you know how to deal with heat they emit. Suggested current for these LEDs is 700mA, but I do not recommend to run them at this load.
  • Very good. worth its price

    posted by emzi01

    Packaged in 2 plastic bags, might be useful to prevent damage during transportation.Build quality is good, as usual for these devices.Color temperature is warm, but not too yellowish, to me its more than 3000K.
    Used sku.54004 to power it up and PC CPU heat sink to keep it cool.Regular aluminum CPU sink is not enough for long-term usage (may need active cooling).Radiator gets very hot (>50C) after ~30s.
    Compared to other similar devices this one definitely worth buying - price/quality is outstanding.If only it lasts the same time as it should.
  • Good buttons for a low price

    posted by Bullback

    For 20 pieces they are really cheap, and I have till now still a lot of fun with them.
    The spec says that they are 1,4mm x 1,4mm this are the upper ring dimensions, NOT the actual hole to fit nice and tight!
    At this moment I don't use them a lot, so I don't know how long these buttons last.But they are nice little buttons for not so much money.

WHY CHOOSE DX.COM?

Get great weekly deals and offers like: Collections