Accurate control of stepper motor

[gadelhas]

Well, if you want to bang your head a little harder, have you considered using a rotary encoder instead of a pot? Then you don't have to worry about linearity, ADC, pot reaching end of travel, etc.

Count the pulses going, and then back. Something like these:

http://www.ebay.ca/itm/ws/eBayISAPI....m=380410565135



I have yet to use one of these so I can't comment on their downsides. My order should get here any day.

Robert

Hi Robert;

I used one of those this last days. They are not bad for the price. I'll put the code as soon as i can on the wiki.

[aratti]

You can Find the code for reading a two channels optical encoder (in quadrature) @ http://www.picbasic.co.uk/forum/showthread.php?t=12911

Post 28 or 27.

Cheers

Al.