Ormerod 1, Mini Height Sensor and Firmware v1.23

[PeterSimpson]

I have just upgraded the firmware on my Ormerod 1 printer from v1.17 to 1.23.
I added the Mini Height Sensor from MiscSolutions which worked fine with v1.17, but after upgrading it does strange things! Sending the Home X command the head goes straight past the sensor and bangs up against the end stop until I switch off.
I contacted DC42 via PM and he told me that I needed aM574 command in my config.g file, however he did not say what parameters I needed with it. Can anyone help please. Are there any other commands which need adding/modifying?
Thanks
Peter

[droftarts]

@PeterSimpson Can you post your config.g and homex.g files? You may have an M574 command in config.g already, but as the probe is used for both X and Z homing, it's worth checking everything, including how the probe is defined with M558 and threshold values used for G31.

Two useful pages:
https://miscsolutions.wordpress.com/mini-height-sensor-board/
https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe

Most likely, you'll want something like the following in config.g. This was generated by the RRF config tool https://configtool.reprapfirmware.org/ using the 'Ormerod 1' predefined template, with 'Unmodulated or Smart IR Probe' selected (dc42's Mini height sensor is aka 'Smart IR Probe')

; Endstops
M574 Y2 S1                              ; set active high endstops
M574 X1 Z1 S2                           ; set endstops controlled by probe
 
; Z-Probe
M558 P1 H5 F120 T6000                   ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z0.8                     ; set Z probe trigger value, offset and trigger height

Ian

[PeterSimpson]

Thanks for those links Ian. I will take a look. Here (for what they are worth) are my config.g and homex.g files. They are virtually un-modified from the files downloaded with the 1.23 firmwareconfig.g homex.g

[dc42]

@PeterSimpson said in Ormerod 1, Mini Height Sensor and Firmware v1.23:

Thanks for those links Ian. I will take a look. Here (for what they are worth) are my config.g and homex.g files. They are virtually un-modified from the files downloaded with the 1.23 firmwareconfig.g homex.g

Yes your M574 command is wrong for the X axis. See Ian's post above.