# Cant get Ender 3 V3 SE z endstop config right **URL:** \ **Category:** General Discussion\ **Created:** [June 24, 2025, 6:56pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996 "2025-06-24T18:56:51Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 24, 2025, 6:56pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/1 "2025-06-24T18:56:51Z")
### Basic Information: Printer Model: Ender 3 V3 SE MCU / Printerboard: SKU pico Host / SBC: Pi Zero w 2 klippy.log > I have been trying to connect the strain sensor/load cell hx711 module. I just don’t understand the config and the documentation About probe it says ```auto [probe] pin: # Probe detection pin. If the pin is on a different microcontroller # than the Z steppers then it enables "multi-mcu homing". This # parameter must be provided. ``` does that mean that it creates a virtual pin? I have also tried [probe] and [load\_cell] but I cant figure it out. how can I config [load\_cell\_probe] and [stepper\_z]endstop\_pin ? Should I not be doing this? ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [June 24, 2025, 6:58pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/2 "2025-06-24T18:58:56Z")
Hello @lefixx ! Please attach the klippy.log to your next post - and not to (another) file server. See here: [How-To Ask for Help](https://klipper.discourse.group/t/how-to-ask-for-help/6327/1) ---
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 24, 2025, 7:05pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/4 "2025-06-24T19:05:05Z")
> [@EddyMI3D](#): > > klippy.log [clippy.log](https://klipper.discourse.group/uploads/short-url/f38t2kZI1lTL8Aa3QhDrdMapQ4r.log) (123.3 KB) edit: added full log [klippy(1).log](https://klipper.discourse.group/uploads/short-url/rORZ8bGITJBnmExZ44ZVQl5iwZT.log) (1.6 MB) ---
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 24, 2025, 7:11pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/5 "2025-06-24T19:11:51Z")
any other ender 3 v3 se config I have seen do not utilize the load cell or they do it somehow else I think they use BL Touch to stepper\_y endstop\_pin: probe:z\_virtual\_endstop But I haven’t read up/messed around with bltouch yet. ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [June 24, 2025, 7:20pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/6 "2025-06-24T19:20:31Z")
See - [[load\_cell] ](https://www.klipper3d.org/G-Codes.html#load_cell) - [Load Cells - Klipper documentation](https://www.klipper3d.org/Load_Cell.html) - Set `endstop_pin: probe:z_virtual_endstop` and remove `position_endstop` in the `[stepper_z]` ---
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 25, 2025, 3:13pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/7 "2025-06-25T15:13:08Z")
> [@Sineos](#): > > `endstop_pin: probe:z_virtual_endstop` `endstop_pin` is already `probe:z_virtual_endstop` and removing `position_endstop`didn’t make a difference. Error is still `Module [load_cell_probe] does not support `probe:z_virtual_endstop`, use a pin instead. ` ---
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 25, 2025, 3:21pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/8 "2025-06-25T15:21:20Z")
[probe] alone is not enough to specify a load cell since a load cell needs 2 pins defined. I has to interact somehow with [load\_cell] Is it possible that the [load\_cell] and [load\_cell\_probe] are not for endstop and only for bed mesh? ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [June 25, 2025, 3:50pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/9 "2025-06-25T15:50:16Z")
> [@lefixx](#): > > Error is still > `Module [load_cell_probe] does not support `probe:z\_virtual\_endstop`, use a pin instead. ` You are right; this is not correct. It is a bit confusing as the load-cell stuff is pretty new, and some parts to ‘polish’ it are not yet fully integrated: - You have to define any unused pin on your main MCU as an endstop (it will not be used but needs to be configured). - You will need to set up some macros that take over the actual homing. Refer to [Load Cells - Klipper documentation](https://www.klipper3d.org/Load_Cell.html) for the entire process and in particular to [Homing Macros](https://www.klipper3d.org/Load_Cell.html#homing-macros). Sidenote: According to what is known today, the HX711 is not a good candidate due to its low sample rate and high noise. YMMV. ---
**Author:** ![lefixx](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lefixx](https://klipper.discourse.group/u/lefixx)\ **Post date:** [June 25, 2025, 5:02pm UTC](https://klipper.discourse.group/t/cant-get-ender-3-v3-se-z-endstop-config-right/23996/10 "2025-06-25T17:02:59Z")
Ah much better, I would have never guessed. Now I am getting ```auto hx711 finished 'load_cell_probe' measurements hx711 starting 'load_cell_probe' measurements load_cell_probe: Forced sensor restart due to error ``` in klippy but at least now I can move on. Don’t have an oscilloscope to see if there is a signal so I think will not use the load cell for the time being. edit: something is not right, I tried to manually put 3.3 V and it still gives errors