(YANQ) - Yet Another Noob Question - Can Z Endstop Switch and Virtual Be Enabled At Same Time?

[rancid falcon]

Hello Again,

After having the Omron inductive probe fail and the hotend almost appearing to attempt to drive the nozzle through the bed plate - and now having the Beacon 3D dialed in - is there a way to:
*) Have the machine stop advancing in Z if it exceeds the Z offset (under any circumstance)?
*) Placing the mechanical Z endstop so it will be triggered and make sure the Z drive is disabled; stop print; beep?

Question is - can the virtual Z endstop and the actual Z endstop switch both be enabled in Klipper at the same time?

Thanks In Advance,
John

[scarlet oyster]

Answer is: No you can not have two endstops (virtual and physical) on the same axis....but .....

1. you should tune in [stepper_z] your homing speed (probabyl lower it) and position_min to about -2mm - then even if your nozzle hits the bed then Klipper will only push it into bed "a little" - this is not a solution of the main issue

2. you CAN use both probe and z-endstop at the same time, but not for the same operation. So in general you can use physical z endstop (dowel pin one, sexbolt - etc) for homing and then use the inductive probe (omron or beacon etc ... they are actually both contactless inductive probes) to do bed leveling (QGL) and meshing - even with rapid scan

3. If you decide to use contact probe like Klicky+Z endstop then you can use auto z offset calibration as a start of every print to find zero position on z-axis with almost perfect accuracy in any temp, of course if you use Voron TAP then auto z is not even needed as your nozzle is your probe. With contactless probe you will never get perfect zero positioning as those probes ( like Eddy, Beacon, Carto even the most basic of them ... Omron) scan the steel plate under the PEI layer of your bed and not phisically the surface itself.