Ready Steady Eddy

[JAZZCNC]

Tony you are correct the stall detect on the AM882 only works above 300rpm. In real use that's fine because thats when your post likely to stall motors as torque is lowest. It's also when you need it most as it's the speed and inertia that does the damage.

Regards the one home switch with twin screws then like Eddy it's a preferance thing but don't be fooled into thinking your Gantry is strong enough it's not going to rack because it most certainly will and more so over time with eddy's setup of using one switch.? . . . Problem comes from the fact you will be accumulating lost or missed steps that never get reset this will eventually cause racking or binding that will cause stalled motors.
Also don't think just because you have the motors tuned well below there threshold your safe from lost steps because your not.? . . . . Every time you E-stop the machine at any resonable speed you have the potential to lose steps due to inertia pushing the gantry/motors. Now unless you always bring the machine to a controlled stop then you have to presume you have lost position and reset your home position.! . . . With eddy's setup only the one screw/motor is effectively reset and any error in the other remains! Do this often enough and It's definate fact you WILL get racking and stalled motors along with premature wear.