At a loss why accelerometer has stopped working - help?

noen

I hooked up a LIS3DSH board a few months ago, configured input shaping, and all was well. (Duet 2 Wifi 1.0 board w/ DueX5). Using the default recommended connection to Temp_DB pins

This past week I updated firmware to 3.4.1 and immediately noticed ringing back on my first test print.

Now, despite two days of troubleshooting I only get "Error: M955: Accelerometer not found" when calling M955.

I have 4 LIS3DSH boards - all exhibit the same behavior.
I continuity checked the ribbon cable, it's good. Even so, just to rule it out, used 6" individual 22awg jumper cables to manually connect to the Temp_DB pins. No dice.

Short of taking the board to an EE with an oscilloscope, I'm baffled what has happened, or what to try. The only system change was moving to 3.4.1

config.g that was known good prior to firmware update:

; Configure lis3dsh accelerometer using Hemera Mount on Duet2Wifi
M955 P0 C"spi.cs4+spi.cs3"
; Set input shaping mode to zvd with center frequency of 40hz.
M593 P"zvd" F40

Any help would be greatly appreciated.

Phaedrux

Have you tried rolling back firmware to see if that's actually the case or just a coincidence?

noen

Well hot dog.

Flashed back to 3.4.1 final and all 4 boards are working.

3.4.1RC1 -> 3.4.1 no go
3.4.1RC1 -> 3.4.1 -> 3.4.1RC1 no go
3.4.1RC1 -> 3.4.1 -> 3.4.1RC1 -> 3.4.1 working

Thank you @Phaedrux !!

rexx

i cringe to update for this very reason gald you guys got it here for PM Prevenative maintance check! ic it could have been the old one did not have either LA or PA or acc

noen

It's back.

Power cycled the printer.

M955 P0 C"spi.cs4+spi.cs3"
Error: M955: Accelerometer not found on specified port

This is maddening.

dc42

@noen my guess is that the cabling is marginal, or there is an intermittent crimp connection.