AccelStepper library « LeafLabs Garden

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AccelStepper library

(12 posts) (6 voices)

Started 3 years ago by
Latest reply from stephanschulz

Anonymous
Unregistered

I just ported the AccelStepper library for use with my project. It was minimal amount of work, mainly changing includes. I ran into a nasty problem, however, with my 39BYG105 stepper motors skipping at just about all speeds. I figure that it could be due to the Maple being so much faster than the Atmel based Arduinos.

Through my troubleshooting and hair-pulling, I decided to try half-stepping the motor. This did the trick! I am posting in case someone decides that they need the library. It is a pretty nice library overall, non-blocking and allowing for multiple instances. I am in the process of adding a boolean to enable half-stepping and then modify the functions so that it can work with full-step or half-step instead of being permanently half-stepped like it is now.

Now I *really* need my gears to show up in the mail so that I can build the gear box and get this thing going!

Posted 3 years ago #
crenn
Moderator

Can you post a link to where other could get the library?

Posted 3 years ago #
Anonymous
Unregistered

BTW, I was considering closed-loop operation with an encoder wheel, however I have had this thing going back and forth 50 turns each way with smooth acceleration to 800rpm and deceleration back to stop before repeating for over an hour and the position is still spot-on, no skipping. I might just skip the optical encoders entirely.

Posted 3 years ago #
Anonymous
Unregistered

My revised one, or the original?

I still need to re-write it so that it isn't permanently in half-step mode and allow the user to set a flag to toggle between full and half-step operation.

But sure, I can post as-is and post an updated version once I get it fixed up to my liking.

Posted 3 years ago #
crenn
Moderator

Depends on what you think, some users will be happy enough with half step, but other might like flexibility. But linking to the original library is also probably a good idea.

Posted 3 years ago #
Anonymous
Unregistered
I contacted the author with my changes. I'll see how he wants to handle this. I feel kinda bad posting someone else's code without consent after making changes to it.

That said, there are checks done in Arduino-land that check to see which arduino release is being used, something like...
```
#if ARDUINO >= 100
#include <Arduino.h>
#else
#include <foobar.h>
```
Is there a check that we can do to tell if someone is using a Maple? Sorry if this has been asked before, but I want this to be a proper patch to the code.

Thanks,
Jason
Posted 3 years ago #
mbolivar
LeafLabs

Is there a check that we can do to tell if someone is using a Maple? Sorry if this has been asked before, but I want this to be a proper patch to the code.

Not yet. I want something like a MAPLE_VERSION macro to get in for v0.0.13. I'm sort of hoping feurig does it for me ;).

Posted 3 years ago #
feurig
Member

Not funny mbolivar.
Will discuss this more later.

Posted 3 years ago #
Anonymous
Unregistered

OK, thanks. I am being asked for this to port the library.

Posted 3 years ago #
Anonymous
Unregistered

Just to mention that I would be interested too in the adapted AccelStepper library.

Posted 3 years ago #
stephanschulz
Member

has this modified library ever made public?
i would like to use it. pls.

Posted 2 years ago #
stephanschulz
Member

i think i got it.

in AccelStepper.h

change:
#include <stdlib.h>
#if ARDUINO >= 100
#include <Arduino.h>
#else
#include <WProgram.h>
#include <wiring.h>
#endif

to:
#include <stdint.h>
#include <wirish.h>

and replace any Serial.print with SerialUSB.print

Posted 2 years ago #

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