Brother TC-225 Retrofit and Robot integration

Now managed to get tapping working Next weird thing however is that the position error of the spindle index is larger the longer i've run the spindle in velocity mode. So say for example 5 seconds of spindle time is within the orient tollerance with a postion error of 0.4 now running the spindle for say one minute will result in a position error of 2 or so, not within the tollerance. And therefor won't do a toolchange.

Fixed that, turns out the pid settings where not so good

So it has been some time, have been using the machine and im pretty happy. Just hooked up en mpg and the mpg encoder worked fine. Next thing to do was connect two knob rotary encoder thingies. I bought These  from rs components, now for the problem im having..
when rotating one way it counts up fine, but the other way around is does not. I have been playing with the wiring, sourcing/sinking, switching A/B. Cant seem to get it to work image missing /media/kunena/emoticons/sad.png
Added some scope screen shots of the knob (doesnt work correctly) and mpg encoder (works correctly)

On the first image, (that does no count) there is no apparent timing difference
between the rising edges of A and B so the encoder does not seem to be generating valid quadrature (at least within the 1 ms sampling time constraints of halscope)

As PCW haas said, the switches are not outputting valid quadrature.

You could send them back and reclaim your €2

I would suggest trying an alternative switch.