Hi Chris, have you ever explored the idea of an e-stop that won't cut the power to the motors? Currently, when the e-stop is pressed, the motors lose power and the arm collapses. In most case, a few limit switches will be bent. I am wondering if it's better to stop the motors from moving but at the same time, maintain the motor positions. Thanks.
In the latest AR4 I have wired the E-Stop to the enable circuit but the arm still collapses as you note. I agree it would be best for the motors to remain under power and not collapse but I suppose this is one of the downsides to stepper motors. I will have to give some thought to a wiring is a soft stop button or another interrupt or means of keeping the motor powered and disabling the pulse outputs.
@chris-annin I would like to add that when looking at it from a safety stand point, it would be great to have the option of a motor hold e-stop. Working for a large company that is focused on safety, I can say that there will be concerns regarding the arm dropping or changing position if the e-stop is activated. Thanks for looking into this Chris.
