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  1. darren adcock

    PWM shielding

    I should explain further, in that the PWM signal is being carried from a module to a mechanical sculpture which is remote to the module, at the minute this is two meters distance.
  2. darren adcock

    PWM shielding

    I thought that the PWM signal being carried along the cable to the motor creates EMI, have i misunderstood?
  3. darren adcock

    PWM shielding

    Hi all, if I have a motor being controlled by PWM I need to shield the cable, so I can use a shielded twisted pair cable. My question is, this cable runs close to a JFET pre-amp for piezo's, terminating to a panel mount stereo jack socket (but possibly this isn't the best solution) what other...
  4. darren adcock

    Single shot pulse triggered from control voltage

    Thanks Harold, ill have a go with these tomorrow and report back if any issues.
  5. darren adcock

    Single shot pulse triggered from control voltage

    HI all What circuit do I need if i wish to trigger a single shot pulse from a control voltage? I would like it so that I could select, via a pot, that the pulse is triggered from anywhere between -5v and +5v if this is possible? The purpose being so I can trigger envelope generators on my...
  6. darren adcock

    Water Motors

    and t rocker!
  7. darren adcock

    Water Motors

    wow, that's quite a wheel!
  8. darren adcock

    Water Motors

    So sadly my workshop got ruined by water damage on Friday/Saturday so it makes sense to read about long forgotten water motors :-) Comedy helps http://www.douglas-self.com/MUSEUM/POWER/watermotor/watermotor.htm#home One of these would sit nicely in my collection of meccano odd bits
  9. darren adcock

    Reel to reel machine, new build or Hack?

    Realize after a bit of costing for this project it's beyond my means at the minute. I can't really get past the cost of the pancake servo to begin with so is being a bit of non starter. If things change I'll come back to this project as it ticks all my boxes of what i'm interested in. Thanks for...
  10. darren adcock

    Learning Kicad

    Excellent, fingers crossed. Thanks so much for your help Darren
  11. darren adcock

    Learning Kicad

    Not to worry I figured it out. I'd forgotten to fulfill the plot function. Here is how it looks in gerber view I'm not quite sure what the next step is now? I've followed the steps in this " Generate Gerber file from Kicad" tutorial on PCBWAY...
  12. darren adcock

    Learning Kicad

    Am a little confused. How come in pcb view, when i select front view and front silkscreen layer i see all the text I'd like on the final pcb, but when i view in Gerber view I don't see all the texts, just the reference for each component? pcb view Gerber view
  13. darren adcock

    Learning Kicad

    Ok that was a little easier than i thought it was going to be, just hadn't paid attention to traces being too close to pads as I'd relied too much on kicad deciding where the traces should go. This passes the design rules check.
  14. darren adcock

    Learning Kicad

    Thanks Then I clicked the design rules checks and got a whole bunch of errors, so will work through them now
  15. darren adcock

    Learning Kicad

    and here is the ground planes added. Rear layer front layer
  16. darren adcock

    Learning Kicad

    Here's the updated pcb new file without ground plane and new trace widths, I used an online calculator, https://www.7pcb.com/trace-width-calculator.php. The motors I am using have a stall current of 1.5a and the online calculator suggests a trace width of 0.942mm. I made the traces relating to...
  17. darren adcock

    Learning Kicad

    Ok thanks. I'll work on this later today
  18. darren adcock

    Learning Kicad

    Hey M Feel like i'm missing a hint here? Maybe the trace drawing current to the mosfet? edit# do the power traces need a larger width?
  19. darren adcock

    Learning Kicad

    Hi, got back to kicad today. Here is how the ground planes and mounting holes are looking. I wasn't sure which image was needed, so posted three This one is " Show outlines of filled areas only in zones" This one is the 'back layer' filled zone before i added the front layer And here is...
  20. darren adcock

    Reel to reel machine, new build or Hack?

    I'm really intrigued by the "tachometer feedback to "tighten" the capstan speed control loop", I've watched a few videos this morning and read a couple of articles about closed loop motor controllers all very ingenious and yes as part of my own learning process this is something I would like to...
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