Looks like it was still disabled from when accelerometers only worked in standalone mode, I built RRF with it enabled and it works!

@Phaedrux
It is a duetwifi to support SBC

FIRMWARE_NAME: RepRapFirmware for Duet 2 SBC FIRMWARE_VERSION: 3.4.4 ELECTRONICS: Duet 2 + SBC 1.0 or 1.01 FIRMWARE_DATE: 2022-10-20 16:17:59

Hi,

I'm gettting M955: Command is not supported when trying to enter any M955 command on my duet2wifi in SBC mode.

is accelerometer support on Duet 2 + SBC not supported?

Thanks,

Hey everyone,

I'd appreciate some help with this, I'm experiencing skipped steps during un-retraction after upgrading my Duet Maestro to 3.4.1, I've confirmed this by downgrading back to 3.3.

Did I miss something in the release notes?

@dc42
This is on beta4.1

Warning: Auto tune of heater 2 failed due to bad curve fit (R=0.030, C=0.001:0.000, D=2.3)

I think the problem may be a combination of a very low power heater(250w), and the situation that the heated bed gets the chamber close to the target temperature already, around 50C and I then use the the chamber heater to reach a stable 60C.

I've tried many combinations when tuning, with hotend and bed heater off, with hotend and bed heater on, and setting the ambient temperature. Each tuning takes 5h+ before it fails.

Any idea why my old heater parameters is giving me an error now?

M307 H2 B1 A29.9 C1151.3 D55
Error: M307: bad model parameters

is there manual parameters that might work with my setup in 3.2?

Help is appreciated.

With beta3.2 I am getting the following error from setting the model parameters for my chamber heater

M307 H2 B1 A29.9 C1151.3 D55
Error: M307: bad model parameters

on previous versions the parameters would set correctly.

11/19/2020, 11:37:31 AM	M307 H2
Heater 2 model: gain 29.9, time constant 1151.3, dead time 55.0, max PWM 1.00, calibration voltage 0.0, mode bang-bang
11/19/2020, 11:37:28 AM	M307 H2 B1 A29.9 C1151.3 D55

just to note, the parameters used is from previous RRF3.2 betas, but with the bad curve error, due to dead time being negative I used the recommendation here to measure and set the dead time manually.

Additionally I receive a bad curve fit using the new tuning algorithm, is there a similar workaround using the new tuning?

RRF3.2 Beta3.2 on LPC

Thanks

@arhi these photos were taken before I knew the issue, and I already soldered the pad, so I apologize for the poor photo quality.

So after receiving the boards from JLCPCB($36.37) to avoid turning your hairs gray troubleshooting, check for lifted pads on the buffer ICs. I happened to have 1 board out of 10 where the TFR pin was not soldered.

This is my homez.g

; homez.g
; called to home the Z axis
;
G91

; Lift Z
G1 Z5 F6000 H2
G90
; Go to first bed probe point and home the Z axis
G1 X100 Y138 F6200
G30

; Uncomment the following lines to lift Z after probing
G91
;G1 Z3 F1000
G90

@dc42:

I have taken a look. It appears to have got stuck in the SD card driver because a command failed to complete. I have seen at least one other occurrence of this.

I have it in mind to add a timeout to that function to avoid the reset happening.

Thank you for taking the time to look into it, I forgot to include that I had tried to load the duet web control page to check on the printer's progress when the reset happened.