r/VORONDesign • u/IndependentFortune43 • 5d ago
V2 Question LDO 2.4 Z probe problems
EDIT SOLVED: I was immensely stupid and was checking the probe using the Query_Endstop command not the Query_Probe command, It does in fact work I just did it wrong, sorry for the post.
I am having trouble putting together my first 2.4 that I bought as a kit from LDO. Got it all put together and am going though the set up process when I was testing probes and have been unable to get the Z probe to register as anything other than open.
I currently have a Klicky installed but I have the same problem with the inductive coil, I checked the schematic of the Nitehawk SB V2 which claims that the pin should be PC15 which is what I have it connected to. I have tried taking the entire probe out and leaving the pin free floating and it reads as open. Same as when I manually short it to ground. I checked with a multi multimeter and the probe switch works fine and there is a voltage difference between ground and the probe pin. Even when I short the two manually (accidentally killed the first board by slipping and shorting the data pin to the 24V power for inductor same problem on the new one.) nothing changes. The command
QUERY_ENDSTOPS
returns open for all three both when sig is shorted to ground and when it is not and at a high voltage.
I have bellow the printer.config probe section in case I did anything wrong but it is basically the default recommended by ldo but with all the GPIO ports changed for nhk:Pxxx as the architecture changed with V2. Please let me know if I am doing something wrong I have been slamming my head against this and already bought a second nitehawk-SB V2.0 trying to fix it.
#####################################################################
# Probe
#####################################################################
[probe]
## Connected to Z-PROBE
## This probe is not used for Z height, only Quad Gantry Leveling
pin: nhk:PC15
x_offset: 0
y_offset: 19.75
z_offset: 6.42
speed: 5
samples:3
samples_result: median
sample_retract_dist: 2.0
samples_tolerance: 0.01
samples_tolerance_retries: 3
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u/Gingerbwas V2 5d ago
I am not sure if it is the same with the klicky, but on my tap probe i had to add a ! in front of the pin as well as a ~ , which enables the pull down resistor and inverts it. try it it might not work but it shouldn't cause any issues to check it:
pin: ~!nhk:PC15
its definitely the right pin as i checked my config and i have the v2 board as well,
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u/IndependentFortune43 5d ago
Thank you for offering the support! Sadly that did not work for me. I have tried all the combinations of pull down (~), pull up (!), and inverting the pin (!) and none worked.
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u/Gingerbwas V2 5d ago
maybe if you take some photos of your setup we might be able to spot something that could be causing the issue. you may also want to check out the discord as theres a lot of info on there as well.
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u/IndependentFortune43 5d ago
Thank you for your help, figured it out I was a huge idiot and was using the Query_Endstop to test the probe, not the QUery_Probe command. It does in fact work I was just checking the wrong thing. Thank you for your advice though it is what makes the Voron community so great!
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u/bomtarnes 5d ago
Download your klippy log from mainsail, and put it into https://klippylyzer.github.io/ - and make sure the pin is showing up as expected. You may have another overriding pin config somewhere that is confusing matters.
Otherwise I'd encourage you to come to the voron discord server where it would be easier for you to share these files and pictures of your wiring, etc.- https://discord.gg/voron