Open algo1980 opened 5 years ago
I think the spindle eats up all the power of the power source, if it is common for him and stepper motors. Lack current to stepper motors to hold the position. If you think this is interference, try soldering the ceramic capacitor 0.1uF-1uF between the motor terminals.
Romychs I have connected the spindle into a different socket, it's totally isolated from the driver and controller box which is grounded. to let you know more about the situation it was working well before it ended up in this bug. How can a spindle interfere with other electronics when it is not even connected to the main electronics board "I mean completely wired up separately"? Not to criticize your point of view but this will allow me to learn more.
I am going to tryout your proposed solution but just to be sure did you mean I should connect a ceramic .1-1uf cap on both the terminals of steppers which are A+ A- and B+B-? and this should go for all axis?
please read this https://github.com/gnea/grbl/wiki/Wiring-Limit-Switches and this http://www.mycncuk.com/threads/9504-Why-star-ground
separate wiring does not ensure the interference does not happen because the interference is transmitted through the air just like a radio signal. if your spindle has brushes then it makes sparks, and sparks make a lot of radio noise (the first radio transmitters were just spark gaps!). any wire that has varying electricity in it will transmit, and any other wire will pick up some of that transmitted energy.
Algo1980, I had in mind a capacitor between of spindle motor leads. Swafer well described the cause of possible interference. Re-read the question again, the steps are lost when you kick the spindle (by hands, for example), do not turn it on or off? Then, all I said above will not solve the problem. Try adjusting the hold current of stepper motors. Try reducing the half-step mode, for example, from 1/16 to 1/8 for testing only.
This may depend on how you wired and routed the spindle wires. you should avoid routing spindle wires along with other signal wires
Hi everyone, I am ending up in a very confusing situation. When I jog the machine while the spindle is turned off it works well but as soon as I kick in the spindle the machine starts to lose steps. For the electronics, they are placed in a metal enclosure which is grounded.