@nottingham82 I have the problem where the 4 wheels for the z axis are too tight, this makes the rotar stuck when it has to laser small objects because there is not enough speed to get over the miniscule bumps on the metal bar in which the wheels are rolling. Are there any known fixes for this? Or should I just use a file to make the screw holes a bit bigger, so the wheels are less tight to each other?
@Zax I actually tried to use 0.9j, and made the changes as mentioned above, it still does not recognize it .
What is really BAD is the laser is turned on on reset, full blast .. and this is a known bug for many moons.. it is to me a major flaw, and to rectify it would cost almost nothing (pull down resistor), a 0805 could be soldered on the 4 pin connector to fix this. Cannot understand why they keep producing this controller without the modification, it is dam serous !!. In the end I added a FET to invert the TTL signal, with a 1K pull-down on the 4 pin connector (PWM to GND) it now works. Thanks for you input.
@coralie-Fr It sounds like a broken cable or bad motor driver, you can test by swapping the cables at the Mana board - if the fault moves you know it's the cable if not it's likely the stepper driver. Then swap the stepper drivers and make sure it follows.