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Submitted by Ciprian on Thu, 05/20/2021 Permalink

I have uploaded the pre compiled FW on my Ender 3 original 8 bit board. Everything seems to work OK but setting the X and Y offset of the probe has no effect.

During Bed leveling command the BLtouch tip will try to probe outside the bed on Y axis (~1mm out). My real probe offsets are: X-42 Y-8 mm

I have sent M851 X-42 Y-8 Z0.1 then M500, M501

When I check the eeprom content by M503 I get:

Recv: echo:  G21    ; (mm)
Recv: echo:  M149 C ; Units in Celsius
.............
Recv: echo:  M420 S0 Z0.00
Recv: echo:Material heatup parameters:
Recv: echo:  M145 S0 H200 B60 F0
Recv: echo:  M145 S1 H240 B75 F0
Recv: echo:PID settings:
Recv: echo:  M301 P29.84 I1.96 D55.47
Recv: echo:Z-Probe Offset (mm):
Recv: echo:  M851 Z-0.10
Recv: ok

So the Z offset is saved but there is no indication that X and Y offsets are stored or at least there is no reading using M503.

When I perform auto home it is working fine, BL touch is triggered and procedure is finished well.

Then when I try Bed leveling command the probe just misses the bed on Y azis with ~1mm.

I tried also erasing the eeprom with M502 and then setting the offsets again but no change.

Any idea?

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