Can Klipper detect Layer Shifts?

Features
1

I have a v-core 3 and considering changing from the Duet board to Octopus v1.1 running Klipper/ Mainsail/ RatOS. My NEMA17 motors will be using 2209 drivers.

Klipper looks good except I can’t find any reference to sensorless homing and layer shift detection.

I would really like to be able to detect & send alarms on a layer shift, so wondering if it’s possible or not? If so, where can I find the documentation? Bonus question: How can a buzzer be hardwired as an alert for print start/end etc., or as an alarm when unexpected events like filament runout or layer shifts occur?

Thanks in advance!

2

Sensorless homing is supported provided you have the appropriate TMC stepper drivers (2209 works fine):

https://www.klipper3d.org/TMC_Drivers.html?h=sensorless#sensorless-homing

I’ve never seen any reference to layer shift detection in the documentation.

You should be able to run a simple piezo buzzer directly off one of the spare fan ports on the octopus. Just make sure you get a buzzer that can take 5/12/24V DC (a lot of them don’t) and run them at 100% duty cycle.