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I womder if you may be better off with a lightweight 'known' circumference feeder wheel for your wire to run over onto the bobbin. That way, by counting the feeder's rotations, you should be able to reasonably accurately calculate the length of wire fed onto the bobbin, rather than trying to measure 'live' resistance or base it on number of bobbin turns plus account for wire tension, bobbin swell etc. Then, a known resistance per length value calc should be easy to display live.
Not sure if this would be viable though, just spitball'n.
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@DB - The thing is, all this design means I can forstall the point of actually winding a pickup - that's the part I'm least confident about ;). But great idea about the flux capacitor, I reckon I can waste another month on that too :).
@Wierdy - yeah I had a similar thought too. Just thinking through how to make sure the fixed radius feeder always turns. There has to be a reasonably simple way? More thought required.
cheers,
Gav.
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For anyone who is interested in the electromagnetic characteristics of single coil pickups (strat vs p90 specifically) I just found this nice lesson paper from a university physics course. It might help when winding if some older spec'd pickup is being attempted.
https://courses.physics.illinois.edu...asurements.pdf
cheers,
Gav.
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See if you can source a grooved roller bearing that fits the shaft.
They do exist, saw them 20 odd years ago when I very briefly worked in the bearings and hydraulics industry.
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Thanks DB! I'll look in to it!
cheers,
Gav.
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3 Attachment(s)
hi guys,
A little more progress today. I cut the top off the box (looks much better now) and finished off my electric motor mount. A big thanks to Gav for showing how to do this as I wouldn't have had a clue. I got the mount cut down to size, installed the screws for securing the motor, and glued the bottom of the mount to the inside wall of the enclosure. I also drilled a few holes in the back for heat escape as I was too cheap to buy a prewired power supply.
Over the weekend I should be able to get the components wired up and test that I understand the connections between them. Then it's just a simple matter of getting the enclosure finished ready to accept them.
cheers,
Gav.
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Yeah half size looks much better!
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Thanks Callum :), she's coming together!
cheers,
Gav.
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Loving this thread Gav, have you considered an encoder on the motor for counting turns.
