Stepper motor controller

[DarthV]

Hi again, my problem is that i would like to use it but needs modifications and we only have de Hex code, so if you could do it for me that would nice, of course with the necessary cash amount for your work, if you wish so !

thanks

[aratti]

Attached the PBP files in txt format. If you need to add more code then you have to change pic.
Suggesting pic 16f628 which has the same pinout but 4K of memory. In this case you have to add these two instructions at very top of the code.

CMCON   = 7
VRCON   = 0

This version is the latest so if you have in use the previous one replace it, with this one.
More torque, better homing and high precision also with 1 single step travel command.

Enjoy.

Al.

[DarthV]

Thanks aratti !

G.V

[Archangel]

Hi Al,
1. Thanks for the nice code example / project, I will try it out !
2. Question: It appears you have set this up as a control for a home brew CNC project, just judging from the use of limit switch inputs, is that correct, and any issues using it for that?
Thank You
JS

[aratti]

Hi Joe, the original idea was to have a handy and simple device to solve linear positioning requirement, and when you do positioning, you also need a zero point to start and limits security.

But since you can serialy network the controllers, you can also control two or three axis and have a small open loop cnc system. The only limitation is that you will have only point to point positioning or linear interpolation but not the circular. But for simple drilling tasks, for instance, this will be ok.

Nice to hear from you.

Al.

[tenaja]

I believe there is a typo in this sub...

WAddress: ' write controller address
Write 4,RData[1]
goto ReadEeprom

should read...
WAddress: ' write controller address
Write 5,RData[1] 'matches the reads...
goto ReadEeprom

[aratti]

Tenaja you are correct. Correction is necessary otherwise controller address cannot be canged. Any attempt to change the address will modify the configuration.

So please correct the write controller address code as per Tenaja suggestion.

WAddress: ' write controller address
Write 5,RData[1] 
goto ReadEeprom

Al.