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alternative to a4988 and drv8825

fabrice974

alternative to a4988 and drv8825
April 23, 2015 11:34AM

Registered: 12 years ago
Posts: 236

hi everyone
i wonder what is the cheapest alternative to a4988 and drv4825 which didn't required manual adjusting
to use with nema 17 1,2a stepper

thanks
fabrice

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dc42

Re: alternative to a4988 and drv8825
April 23, 2015 11:47AM

Registered: 11 years ago
Posts: 14,689

The A4982/A4988 family and the drv8825 can be driven from a DAC or digipot to avoid the need for manual adjustment. Both the Duet and the Smoothieboard electronics use A4982 drivers driven in this way.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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fabrice974

Re: alternative to a4988 and drv8825
April 23, 2015 12:17PM

Registered: 12 years ago
Posts: 236

any solution which work with a ramps board ? (just looking for the driver)

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dc42

Re: alternative to a4988 and drv8825
April 23, 2015 12:55PM

Registered: 11 years ago
Posts: 14,689

Quote
fabrice974
any solution which work with a ramps board ? (just looking for the driver)

Not that I am aware of. Get yourself a modern board, such as Duet or Smoothie, and you will gain more than just software control of motor current.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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fabrice974

Re: alternative to a4988 and drv8825
April 23, 2015 01:21PM

Registered: 12 years ago
Posts: 236

does both support core xy mode ?

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fabrice974

Re: alternative to a4988 and drv8825
April 23, 2015 01:23PM

Registered: 12 years ago
Posts: 236

find the answer for smoothie!
[smoothieware.org]

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dc42

Re: alternative to a4988 and drv8825
April 23, 2015 03:45PM

Registered: 11 years ago
Posts: 14,689

Yes, both have firmware that supports CoreXY. I support the CoreXY mode in Duet firmware, see [github.com].

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].