How hard is it to control those motors? Are you simply pulling the stepper
motor out of the cd drive and then using a normal stepper driver, or are you
somehow re-using the cd drive's origional stepper driver as well?
---------- Původní zpráva ----------
Od: Mario Lombardo <[email protected]>
Komu: Brmlab: Hackerspace Prague (main discussion) <[email protected]>
Datum: 18. 6. 2015 18:39:05
Předmět: Re: [Brmlab] Chido, Mrkva a dalsi tesla/radio-lidi: coil winder
"Hi Tim.
Sounds like fun. I was looking at the pan for a CD/DVD player. It moves the
laser head in place, and it's powered by a stepper motor. I think you've
probably seen it multiple times. If your coil demands don't exceed the
length of that shaft, I find it to be a worthy candidate for a CNC winder.
The sides can be printed at the lab, so I imagine the tolerances would be
sufficient, and the driver, easy to hack.
Each rotation of the coiling motor would correspond to a step(s) of the
stepper unit, placing the wire to be wound correctly and then with either
optics or a hall effect switch, send it back.
I would imagine something like this would already be online though, but I
haven't looked yet. hmm
Oh, yes I know this wouldn't suffice for a tesla coil to impress the Teslak
people :) In that case, I would use some parts from an inkjet plotter.
Somehow, I remember we had one parked just outside the lab like a year ago
or more? Regardless, they get retired from time to time.
If you can't get that precise for a large-scale motion control, I'd hack it
with a shallow steel/aluminum I-beam and a belt.
We just had that copy machine cannibalized. It was tasty! Some very nice and
powerful stepper motors in there. I took one for a lock. I've fallen in love
with copy machines now--loaded with electromechanical parts!
On 17 Jun 15, at 20:52, <[email protected]> <[email protected]>
wrote:
> Hey,
>
> I am looking at buying or building a coil winder and putting it in brmlab.
It would be for normal round coils and not for toroids or anything fancy
like that. I am going to use it for developing my braille prototypes, so I
will be getting one of the ones for the thin wire sizes. I haven't decided
if it will be a hand winder or a CNC winder. Do you tesla people/radio
people have any requests for specific features/parameters?
>
> Tim
>
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