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diy module Customers Reviews

  • Good product

    posted by Ringmaster2

    It is easy to use (12V DC) and very tiny for its power; suitable for a lot of projects. Cheap and good quality COB led; the best to start from.
    Use a good heat sink according to its power, be carefull to not overburn it with heat or excesive voltage and amperes.
    Great for light everything (lamps, torchs, cars, etc). If you use 2 of then in parallel and undervolts them, you will have a light that lasts veryyyy long and uses low electricity.
  • A good product

    posted by miloradovich

    A large enough screen to a pleasant blue LEDs and good performance in measuring. Easy and quick connection to the circuit. Very convenient and a useful tool for any kind of construction by amateurs as well as professional use.
    In any case, a good product with satisfactory performance in service.
    Recommendations for the use of this product in all cases where high accuracy is not required measurements.
  • NOT a buzzer

    posted by clough42

    This is an amplified piezoelectric speaker. It uses a transistor to amplify a logic-level signal and drive the piezo unit.
    When you pull the S pin low, the speaker emits a single click. You must provide a square wave to get a tone out of it.
    This seems to be a decent little amplified piezo speaker, but it is most definitely not a buzzer, as advertised. I bought it for my son to use in his arduino projects, and it works fine for that application.
  • 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.
  • strong light source

    posted by ustohal

    Round plate with 20pcs LEDs lit intense warm light. Luminous flux is about 70W clear bulb. Beam angle of 100 degrees estimate. She has a lot of heat, it is necessary to place the radiator. It can be screwed for the center hole. Isolate the screw, there is short supply pads. Covering plastic layer is soft to the touch. Rather put LED module cover glass. CAUTION: do not look directly at lighted plate, it hurts your eyes really shines a lot.
    It is an efficient light source with high power. I will powering 12W LED constant current cource cower cupply driver 300mA (SKU 81770). Lit perfectly.


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