How can we safely implement end stop switches? Im afraid if I simply install something that disconnects a motor from the TinyG abruplty it could cause damage.
I could easily make light sensors that could see when the gantry has gone too far, but would disconnecting the motor cause harm?
Also how can we trigger the TinyG to stop where it is in the line of code? That could allow me to correct the problem and then continue without loosing count of progress.
Placing a disconnect switch in series with stepper winding leads would not be a good long term idea. It would de-energize the motor, but tinyG would have no idea it was disconnected and would continue to run whatever Gcode job was running at the time.
Installing the limit switches per the Wiki would logically de-energize the motors.
Stopping or pausing a running Gcode job is non trivial and is typically handled by the CAM layer (machine controller) software. Chilipeppr and CNC.js are typical CAM environments for tinyG, but there are others.
Review this link Gcode
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