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memory board Customers Reviews

  • 70% Efficiency buck Driver

    posted by amelyman

    27,9 Watts power from source at High mode
    So, looks exactly for SST-90 LED...
    Probably I hame made some mistake thru measuring and the Efficiency is higher...
    I measured with UNIT UT-70A Multimeter the linear voltage and linear current. As I know, it is not exactly correct (LED power is not "Linear")
    Really powerful driver. So, it has 5 modes - 28 watts, 14 watts, 8 watts from the Source and fast strobe and S.O.S. modes.
  • When you need local storage

    posted by kirovclass

    Simple daughterboard that can help you to provide your Arduino project with a local non-volatile storage.PCB design seems very clean, nothing to complain about it.
    An improvement could be to ship it with an optional connector that allows it to mount the board horizontally.
    There are no much choices when there is a need to store data locally on a Arduino project, and for the little price, it's good to have one of these in the toolbox.
  • Works well - as advertised

    posted by ledsmoke

    A true constant current board that accepts a voltage up to a full Li-ion battery of 4,2 or a little higher for the exotic flavours of batteries.Also good with 3*AA rechargeables but dont expect to get the full 2,8A to the led.Dont use with two Li-ion batts though. It will cook and burn and fail and it will smell. Dont ask how i know ;-)
    Versatile and powerful but does not have enough low and medium modes for modern high powered flashlights.
    Great little boards.
  • 3*7135 chips

    posted by espimones

    7135 chipsRegulatedMemoryReal output advertised
    This regulator drive out fairly steadily 1.4 amps. in max. mode.Exactly: 1.35 in high mode, 0.4 in middle, 0.6 in low (fluctuating in sos and fast strobe modes).I have put it, working together with a 16 mm alu base Cree R5 led in my Trustfire TR-801, and it bright now 25%-30% more than the original Cree Q5 led, giving a really flood light!According Cree data sheets, Cree R5 can hold up 1,5 mA, so this regulated circuit is perfect to this led. Other drivers that can only drive up 1000 Ma, will give 25% less light tan this.
    I recommend it
  • Good 5 mode driver with memory

    posted by Lollerkopter

    - It's very small and compact.- I like the high, middle and low modes - One, or two serially connected Li-ion battery cell is an accepted power source.- The memory mode is very useful.
    I'm using this compact driver to drive a Cree XP-G R5 bin LED. The driver max. current lower than the LED max. current, so less heat generating during operation. You can increase or decrease the max. current, if you replace the sense resistor (0.25 ohm) to lower or higher (or solder other resistor in paralell mode).I very like the memory mode! It's help to forget the High - Mid - Low - Strobe - S.O.S. mode cycle.
    Good, cheap driver. It's works perfectly.

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