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digital board Customers Reviews

  • Works great

    posted by Oxyacetylene

    Very good price for an Arduino sensor module. You can probably adjust the sensitivity but it may work fine without adjustment, depending on your needs.
    The "out" pin is normally in an on or high state. In your Arduino code you will need to monitor for that pin switching to a low state. You will probably want to also add a slight delay following the pin state read operation so it does not register multiple events every time it detects something...unless that is what you want.
    Great sensor module that works. Easy to use once you figure out the "out" pin as stated above.
  • excellent class d amplifier!

    posted by mikeyb789

    first of all the 50 x 2 is not quite correct atleast not on my board. i only got about 40 watts but could have been my speaker ohms being 16 ohms. other than that great as a subwoofer for small 6 x 9 speaker kit.
    could have smaller heatsink as it has never barely got warm with me even near max!
    buy build a small amp box and you will have a very good bass pound as compared to those expensive bazooka bass tubes that cost more than $100! you cannot go wrong in anyway with this amp. if you need tech specs google its amp with datasheet at end of the name! THX
  • Works like a charm!

    posted by bstien

    - Easy to transfer text to device, either by included software (Windows) or this ruby-script (https://github.com/ajesler/ledbadge-rb). The script works very well with little to none configuration. - The USB-port is used for both data-transfer and charging of battery- Has both a safety-pin and a magnet on the back which makes it easy to place
    Really useful for small home-projects, or monitoring of local machines.I plan to use this to monitor the temperature when brewing beer at home. For now, I use this to show my local bus schedules in a marquee from my Raspberry Pi.
    Love it! Really easy to start using on Linux if you find the right scripts
  • good audio quality

    posted by adjevanhethof

    - audio quality s good, no noise, hum or other artefacts- when running on 3.7v (of a li-ion cell), this unit still functions reliably and produces quite adequate audio levels- input senitivity is such that you can drive it directly from the headphone ouput of an ipod or smartphone- very low qiescent current; will run for a long time on a battery- well built, connection cables were included
    I used this little unit in combination with a bluetooth receiver (also at DX), using the li-ion battery of the bluetooth receiver to power this little amp. totgether with two proper loudspeakers, you get a low-cost wireless boombox with a really good sound quality.
    great component. at this price, there is no point to build it yourself.
  • Recommended

    posted by pyxis

    Good sound. Enough for a little or mid size speaker.
    Highly recommended if you want to build a cheap and good sound little amplifier. I use for my desktop pc. I think this is a good choice when you need a little power , good efficiency power amplifier. And if you aren't an Audiophile "white ear" user. In this case this little board is your best choice.
    Good stuff , easy to use, and little populated PCB.

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