Stepper Motor Drivers

[Riley Porter]

To Josh,

And everyone else that cares/does not care :)

I know you have been interested as of late just wanted to update ya bro.  So if you have not been looking around you might not know the a3977 looks like that variant has been discontinued.  The a3979 is avail but pretty pricey (8-12$) each.  Also the A3979 is SOOOOO small it might be hard for the DIY'ers.. so dunno.. that being said I am getting one of them and one of the A4983.  It looks pretty hot but we will see.  Its pretty cheap and avail in large quantities.  (3.50 ish each).

FYI bro.

I will let you know when I get it fabbed and tested up.

Ril3y

On Wed, Dec 16, 2009 at 12:31 PM, <jos...@gmail.com> wrote:

That is a very good point unless the CNC frame was above the tool head like a CNC crane then yes that would proably plug up even a optical mouse is ok for normal use but I don't roll it around in oily guck.

Ok well I look forward to your gadget & in the mean time I will continue work on the a3979 motor driver & interface board.
Also I may make myself some perforated angle so I have more to build with when it comes.

On Dec 16, 2009 10:37am, Riley Porter <riley...@gmail.com> wrote:
> One word.  Debris... Magnets dont care if they get dust on them.  :)  And in a cnc I think debris might be an issue :).
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> We are waiting for the angle to be finished being fabricated.  Should not be much longer until that is done.  We do not have an exact time frame.
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> Ril3y
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> On Wed, Dec 16, 2009 at 10:34 AM, joshua wojnas jos...@gmail.com> wrote:
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> it is mid december any updates when the contraptor kit might ship &
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> why not use the chip from a 900dpi lazor mouse as your encoder they
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> have signal processing stuff in them they could read a strip near the
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> rail ..instead of AS5306 noticing magnitisum from a sign wave on a
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> tape recorder tape...
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> --
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> thanks for your time,
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> Joshua Wojnas
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> 315 5071070
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> My webpages on electronics
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> ... comming soon
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> --
> Riley Porter
> Sr. Network Security Engineer
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> Offensive Security - OSCP
> SANS GIAC - GCIH
> CCNA, Security+
> ACSA - Arcsight Security Analyst
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--
Riley Porter
Sr. Network Security Engineer

Offensive Security - OSCP
SANS GIAC - GCIH
CCNA, Security+
ACSA - Arcsight Security Analyst

[Vitaly Mankevich]

A4983 pitch is 0.5mm which is as small as A3979. Maybe A3977 with
1.27mm pitch might be the best choice, no? Btw, check out the single
sided driver for A3977: http://pminmo.com/ss3977/ss3977.htm

[Riley Porter]

sexy bro!  I plan on trying our own PCB 1 single sided too btw.  For the reason of I want a linear encoder input into the driver :)

good work.

Ril3y