400 steps Stepper Motor support?

[bmanos]

Hello, I would like to use 400 steps stepper motors (because I have them)

Specifications: Step Angle (degrees) : 0.9 2-Phase (4 wires) Rated Voltage: 3V Rated Current: 1.7A/Phase 5mm Diameter Drive Shaft Holding Torque: 48N.cm - 4.8kg.cm NEMA 17 form factor datasheet link: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Robotics/42BYGHM809.PDF

How can I configure them to work?

Thanks in advance Emmanuel

[CarlosGS]

It depends on the version of GRBL that you are using, and whether it is a RAMPS of a Sanguinololu board. Check out the GRBL manual to see if it helps: https://github.com/grbl/grbl/wiki/Configuring-Grbl-v0.9#100-101-and-102--xyz-stepsmm

[bmanos]

Thanks for the quick response I use the RAMPS with A4988 driver and I also use the your file https://github.com/carlosgs/grblForCyclone/archive/grblForCyclone.zip Should I modify the "defaults.h"? and what should I change? a little help is very welcome Thanks

[CarlosGS]

Yes, I think you should change STEPS_PER_REV almost at the bottom of the defaults.h

Then follow these instructions: https://github.com/CarlosGS/grblForCyclone#how-to-flash-the-grbl-firmware

Let me know of the outcome!

[bmanos]

Thanks I already did this without success but I clear the eeprom first and now it works. The only problem now is the speed it moves quicker than before (how can I change this) Thanks one more time

[CarlosGS]

Please first check that the performed distances are accurate.

El 9 oct. 2017 8:00, "manos" notifications@github.com escribió:

Thanks I already did this without success but I clear the eeprom first and now it works. The only problem now is the speed it moves quicker than before (how can I change this) Thanks one more time

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/CarlosGS/grblForCyclone/issues/5#issuecomment-335071723, or mute the thread https://github.com/notifications/unsubscribe-auth/ABj3qjGVhxuzAnxZJimy6rW9Us0F8S1Nks5sqbZjgaJpZM4Px0Se .

[bmanos]

The distance for Y is ok :101 and for X is 161 instead of 168. I also correct those values inside the defaults.h file.

[CarlosGS]

Then it looks fine. The motion speed can be adjusted in the host software. Are you using bCNC?

[bmanos]

yes just first steps still looking for what is where

[CarlosGS]

Awesome, bCNC is the option that I prefer. Have you seen this tutorial? https://github.com/CarlosGS/grblForCyclone/wiki/1)-Configure-bCNC-for-Cyclone

[CarlosGS]

Sorry this is the right tutorial page: https://github.com/carlosgs/grblForCyclone/wiki/2%29-Hello-World!-Mill-a-bowl-with-bCNC

[bmanos]

Hi Carlos, yes I have seen it and I will try it next week end. Where can I found infos on adding z end stop and for the probes usage. Is there any other tutorial from start to finish on how to design export and mill a pcb board? Thanks again, Emmanuel

[CarlosGS]

Not that I can think of. Give a try to the search option of the Cyclone mail list: https://groups.google.com/group/cyclone-pcb-factory I have not used the machine for a long time so there are some things I don't remember too well..

And good luck with the tests! Feel free to share your results in the mail list as there is more people that can help.