Guitar Pickup Winder

[jeremy17405]

good work but i think you should check the device that move the string from left to right...i think it's not fast enough

[azayles]

I'm surprised you didn't use the 5v from the ATX PSU to power the logic, and the 12v line to power the steppers via the mosfets. This will enable my higher torque and rotation speed. It's not uncommon for stepper motors to run extremely hot due to the higher voltages used, and work fine in this temperature.

[pickering238]

@azayles I'm going to try that to increase the speed. That was one thing I wasn't happy with was the low speed. It takes like an hour to wind a pick up. Wayyyyyyyyy to slow ;-)

[azayles]

@pickering238 I saw on a related video a guy used some sort of big electric motor (from a grinder I think) to wind his coils. It was going at an insane speed! but wire didn't break or anything - and it was hair fine.

[SubGumCRyno]

That's pretty groovy.

[frogz]

so what you're saying...

you could power it with a big 5 volt power supply

yay for using parts you have!

[pickering238]

@frogz The stepper motors are supposed to run on 3V and are 1.6 ohms per winding. I bought a hefty ATX supply since the 3.3V line on the supply would be able to supply plenty of current. When I hooked it up, the drop across the mosfets was enough to prevent the steppers from turning. So, I used the 5V line instead. To separate the CPU from the motors, I ran the 12V line thru a 7805 to get a second 5V. After I finish the rightup, I'll be posting it online somewhere.

[hboy007]

@pickering238 "The stepper motors are supposed to run on 3V and are 1.6 ohms per winding. " I wouldn't be so sure about that. Stepper motors are designed to run with a specitic current waveform, depending on how many phases they have. It's the current that matters. Decent stepper motor drivers need surprisingly high voltages (in the order of 30-80V) to keep up with the reactance at higher frequencies. with 5V you can't make the it run fast and as you rev it up, it'll lose torque and stall.

[pluckygalaxy]

Amazing

[knobudotus]

Really good work!

[playfsx]

very nice work !