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Describe your issue:
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Well, as you might know, i had some problems with my horizon sensor as probe. I managed to make it work, but lowering the z homing speed and acel, and doing a lot of modifications.
I have an adxl in my ebb42 v1.1 atached to my toolhead, so i can use it for this.
My actual config for adxl is this:
# Accelerometer
# To test resonance, run TEST_RESONANCES AXIS=X or Y
[adxl345 acelerometro_EBBCan_0]
cs_pin: EBBCan_0: PB12
spi_software_sclk_pin: EBBCan_0: PB10
spi_software_mosi_pin: EBBCan_0: PB11
spi_software_miso_pin: EBBCan_0: PB2
axes_map: x,y,z
Anyone has tried this feature already?
Also, as i don’t want to install all the branch in my klipper code as i have some modifications and other things, wich files should i download from this branch in order to make it work¿?
Not the author, but you can see the changes made here. Keep in mind the last push to that code was four years ago, so I’m not sure if it’s still maintained or still works on the latest Klipper.
A interruption pin must be specified, which is the pin where i should wire the interruption pin of the adxl to. As I have my adxl inside my ebb42, not externaly, i dunno exactly how to do this (how do i wire this xD¿?).
According to bigtreetech, i only have this info about it:
I have not revised this code for a long time. I would say the initial experiments were not very promising. The issue is that it is difficult to obtain reliable triggering of the adxl probe while avoiding false triggering. Basically, either the probe is too sensitive and can trigger from simple Z axis movement (especially on a bed slinger where Z axis directly moves the X beam with the extruder with the accelerometer) or it is not sensitive enough and may miss some of the actual cases nozzle hitting the bed. And missed events may result in a catastrophic damage of a printer, as Z axis is typically very powerful and can bend something in the hotend. So for most of the printers it is not safe to use an accelerometer as a probe, and I did not pursue this any further than this.
I already use that configuration for my adxl (i use it in order to measure resonances). The problem is that a interruption pin is needed, and as you can see, bigtreetech hasn’t connected that pin to the ebb, so i would need to solder it to some pin by myself.
Thank you, @dmbutyugin. I had the same concern. Since I intend to use it not only as a probe for bed mesh but also as a virtual endstop, I believe it would be best to discard this option, as it may not provide the level of safety I require.
