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  1. darren adcock

    PWM motor noise getting into audio

    Hey all I have been working on motor driven mechanical sculptures that are controlled by a PWM signal, which is being controlled by control volatges from my synthesiser. The motors are Pololu 12v cylindrical brushed geared DC motors (Low power). The one in question is 260rpm. The sculptures...
  2. 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...
  3. 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...
  4. 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
  5. darren adcock

    Reel to reel machine, new build or Hack?

    I'd like to have a reel to reel player that the speed can be controlled externally, this would be control voltage outputs from a synthesiser, via a voltage controlled pwm circuit. Eventually I'd need multiple as working with a multi channel composer, but for now just get one working as a...
  6. darren adcock

    Learning Kicad

    Hi all I wish to learn how to use Kicad. I have been doing tutorials via Kicad and watched some video tutorials. I have done a few smaller tutorials like learning simple led circuits for example. I would like to see if i can go though the process with a Voltage Controlled PWM circuit I am...
  7. darren adcock

    MFOS Cv and Gate expander module

    Hi all. I can't get a photo of the project to here as I can't get an iphone 4 to talk to windows. So maybe this thread is a non starter? Anyhow, I've taken lot's of readings that may help in fault finding. This is quite a long thread which requires scrolling, maybe there was a better way...
  8. darren adcock

    Piezo's. Both running them over distance and pre amps

    Hey all. Today I was trying to help an artist with an installation. They want to amplify water dripping on metal objects, I tested today attaching piezo discs on to them (water proofed) with simply putting a 100nf capacitor across it's contacts then running them around 15 meters each to a...
  9. darren adcock

    Painting own 6mm guitar/instrument cable 6mm

    Hi all, just wondering if anyone paints/sprays their own cable? I have a need to paint some 6mm guitar/instrument leads I'm going to be putting together next week and wondered if anyone has experience with what type of paint/spray works best? Thanks in advance Darren
  10. darren adcock

    Startrite TA 1250

    Trying to help a friend problem solve his Startright 1250 which won't power on. After having a look inside I could see a floating wire (circled in red), the wire connects to the 0 terminal on the left handside (circled in blue) which comes from the transformer. I'm hoping someone can help in...
  11. darren adcock

    Pug mill power switch wiring

    Hi all, I've been asked by a friend to see if i can repair his pug mill, looking at the wiring of the switch i can see a blue (neutral) wire hanging free. Looking at the switch box and the wires i'm not confident it is robust, I don't like the floating terminal block. I've attached photo's so...
  12. darren adcock

    How this forum came to be

    just wondering how this forum started? Be nice if there was a write up about this on here somewhere? unless i've been unable find it?
  13. darren adcock

    mpf102 duds

    I bought a batch of MPf102's off of Ebay to put into some LFO's I've been building. Got the LFO's working apart from the ramp/saw and square sections which followed a pair of MPf102's. Spent quite a while being baffled but managed to narrow the Problem down to the pair of MPF102's, surely enough...
  14. darren adcock

    volume/frequency activated gates/triggers

    Hi all, I've been asked to make a device which allows a rapper to produce gates/triggers to interface with midi equipment. After an initial discussion we decided that we could use certain or a series of volume and frequency windows which would activate the gates/triggers. This would all be...
  15. darren adcock

    Testing Salvaged Motors

    Hi. Just want to make sure I'm checking correctly how much current is being drawn from motors I salvage, included is a drawing of how i'm testing (free running). And do i just stall the motor to check it's stall current? seems correct, but best to check. Mostly the motors are from printers i...
  16. darren adcock

    Alternative Chassis Socket

    Hi all I've been using these Camdenboss chassis mount sockets for a while, however the distributor can't say when I can re-order and can't guarantee they'll be stocking them again. I've emailed Camdenboss to no avail...
  17. darren adcock

    A thanks to this forum

    Wasn't sure where this should go. I just wanted to share a few images of what this forum has had a major part in helping me build and say thanks, The images shared are from a public engagement residency me and another artist Tasha Whittle have just completed for ten days. We were put together as...
  18. darren adcock

    LFO LED indicators

    Wasn't sure if this should go in 'audio' or 'optoelctronics' I've been trying circuits out today to see if i can find one that will sweep the same as for example a Sine wave that's in the region of +/- 5v at it's control voltage out. I've found I've misunderstood something in that the LED only...
  19. darren adcock

    Yusynth metaliser

    Hi all, i'm looking for advice on what component values i may need to change on this circuit to run it at -12v / +12v rather than the -15v / +15v please? Best Darren
  20. darren adcock

    Bench power supply advice

    Hi All. Not been on here for a quite a while as lost my workshop and ongoing back issues are causing me to change the way I work. Anyhow, I've made a small area in my flat and am in need of getting a smaller in size bench power supply if one exists, also with ongoing back problems the lighter...
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