usually everything is working fine. But sometime I get a hed crash using bltouch but only if the printer was turned off and I home for the first time. After that, it doesnt happen again… but if I use the printer again after a few days, I can never be sure
Printer is Artillery Genius MKS GEN L 1.0 stock board, genuine BLtouch (I guess V3.1),
I found some stuff online regarding klipper issues witrh bltouch, but they are all old (2018)
Here is my bltouch config
[bltouch]
sensor_pin: ar19
control_pin: ar11
x_offset:28
y_offset:-33
speed:20
samples:2
samples_result:average
set_output_mode: 5V
probe_with_touch_mode: true
stow_on_each_sample: false
"One thing I learned after installing BL Touch on my original (v1) Cr-10S Pro is that it is rather sensitive to EMI (electro-magnetic interference) and it will behave in an unpredictable way when exposed to too much electrical noise.
After I read how it actually works I understand why. Running long wires for BL Touch bundled with “high” power PWM wires like heaters or steppers is asking for trouble. So is using multiple power supplies without the same solid ground reference - this is pretty much the situation for all people running Klipper with a Raspberry Pi plugged into a power supply that is separate from the printer’s power supply. None of this is immediately obvious from reading the available information and I am convinced that this is the reason why many people “hate” the BL Touch.
If this is the problem, the solution is to separate noisy power wires from quiet signal wires when they run over long lengths, use shielded BL Touch wire harness, properly reference the ground between multiple power supplies, etc. Antclabs REALLY need to emphasize the importance of BL Touch sensitivity to induced or coupled electrical noise and instead they just brush it off by showing some shielded cables on their web site."
But I might have been to far on the edge on the z offset of the bltouch. Is it possible to set the first z speed klipper lowers the head on homing in the head ?
