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The $3 4 channel constant current LED DMX dimmer board ( giveback project )

Discussion in 'The Development Lab' started by mrpackethead, Jun 12, 2011.

  1. mrpackethead

    mrpackethead Full Time Elf

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  2. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    Can you tell us the chip number so we can see specs, etc ?
     
  3. chilloutdocdoc

    chilloutdocdoc Full Time Elf

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    Any hope that the board could be configured to drive a transistor or FET for use with higher current stuff (LED strip? ETC)

    Non-Isolated output I assume?

    DMX through or output?

    Input Output Connectors?

    I'd be up for maybe 20-50 depending on how long the pay date is from now. I'll also offer to be a US ship point for anybody over here to keep shipping down for the US folks.
     
  4. SmartAlecLights

    SmartAlecLights Im a SmartAlec what can i say! Community Project Designer

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    since no price is locked in, Im willing to go for $100 bucks worth.
    that's about 33 of them according to my calculator
     
  5. tuppetsdad

    tuppetsdad Funding & Tech Support

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    Thanks for this MPH - I'm sure this will become the standard for DIY. We would like a lot of them. Chat with you about how many!
     
  6. AAH

    AAH I love blinky lights :) Community Project Designer Generous Elf

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    Sounds awesome at this point. Once you've got a working design I may well go for a fifty or hundred of these myself. Big props for giving back to the blinky blinky community MPH.
     
  7. XDU

    XDU Full Time Elf

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    Count me in for 20 please Andrew
     
  8. kel

    kel Dedicated Elf

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    Sounds fab, mph ... but could you explain why 4 channels, pls ???
     
  9. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    Is the CC part of the IC linear? What I mean is: is it a linear constant current source that has pwm applied to it for dimming?

    Also, does it have a Vo range that needs to be adhered to? That might be a problem. It would mean you'd need to be very careful with the number of LEDs and the supply voltage.

    eg. A single red LED and a 12V supply would leave Vo @ 11.2V and potentially dissipating way too much. That's one drawback CC chips can have. :(
     
  10. odlids

    odlids New Elf

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    Put me down for 20 thanks.
     
  11. Michael Sullivan

    Michael Sullivan New Elf

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    I would be interested in 40 - 50 what ever works out come order time.
     
  12. lithgowlights

    lithgowlights Senior Elf Generous Elf

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    I'll take 50 please. Great project - thanks

    Edit: Just upped to 50 from 20, as I just thought of a few new uses for them :)
     
  13. race777

    race777 New Elf

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    i'd be interested in 50 , maybe more.
     
  14. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    OK, sounds like I'd be mad to pass this one up. 20 boards for me please! :D
     
  15. Eric outback NT

    Eric outback NT Living the fast life

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