Electronics Diode Fan Controller now with VIDEO !!!

Discussion in 'Modding' started by ROB 636, 15 Sep 2008.

  1. mvagusta

    mvagusta Did a skid that went for two weeks.

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    It looked like you had it working back on page 1, i'm guessing there might be a connection/design problem on your board if the lights are not behaving the same as they were before.
     
  2. RM5D

    RM5D What's a Dremel?

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    Fading LEDs with capacitors. LITTLE PROBLEM

    What you need are pull down resistors on the base of each transistor to stop them "floating high - ON.
    1K should do the trick - to explain the resistor will be accross the cap. to gnd.
    Will effect fade time slightly - play with diff. values.

    Thanx
     
  3. ROB 636

    ROB 636 Ski-Ba-Bop-Ba-Dop-Bop

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    I will try to get a video of it this weekend and better pictures of the both the controller and the board.
     
  4. ROB 636

    ROB 636 Ski-Ba-Bop-Ba-Dop-Bop

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    OK this is what I have now. The video should show what I mean.
     
  5. ModMinded

    ModMinded Are you throwing that away?

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    Hey Rob,
    I'm not sure what the problem is after watching that video. It seems like the leds turn on and off as they should (at each step.) It does appear that the lights on the left all dimly light up when you turn to the first step. You might be getting some light bleed over along the side as the other LED appear to be glowing from that, rather than voltage.
    Can't quite be sure.
    Also, I wonder how you have the fan leds wired in, maybe they're somehow giving juice to the other leds?
     
  6. ROB 636

    ROB 636 Ski-Ba-Bop-Ba-Dop-Bop

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    The diodes on the board not the rotary switch for the bar graph. I did that in case I wanted to not do a bar graph. I have had some one look at it that knows electronics he says that it is the schottky diodes.

    Also now I have 50 3mm UV LEDs that I cant use because ordered the wrong ones. Found out I needed 5mm.
     
    Last edited: 3 Nov 2008
  7. ModMinded

    ModMinded Are you throwing that away?

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    I don't get what you mean. What about the diodes on the board, besides that there's a problem with them that your friend found? I thought you were having issues with the bargraph...:duh:

    I might be interested in getting some of them from you. I could use smaller ones possibly. Send me a PM if you want to sell off some of them.
     
  8. mvagusta

    mvagusta Did a skid that went for two weeks.

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    I dunno.. i did notice that in your diagram the diodes are the opposite way to how Cpemma's original diagram is, and since you aren't trying to have fade on there's no point having the transistors anymore. Fade on & off would have been a nice effect however, or even just fade off like your original design.

    That being said, it does look nice as it is now in your video!
     
  9. ROB 636

    ROB 636 Ski-Ba-Bop-Ba-Dop-Bop

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    I am running the controller right now, I have gotten used to the other LEDs being lit.I'm going to do the same with the other one.

    As for the 1/6 watt resistors they didn't even get warm, but now I need another Aqua LED .
     

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