Input Shaping Board shutdown during messureing

[MichaelKallner]

Hello,
I have a question about input shaping.

I have an Adafruit LIS3DH sensor, wired and configured directly to my Duet 2. The sensor is also recognized (green light).

However, as soon as I want to take a first measurement (via the plugin or console commands). The measurement process aborts with the message "Measurement aborted" and the board restarts completely.

The cable used is a multiple shielded one, the shielding is also grounded.

Duet Firmware is 3.4.1 // Input Shaping Plugin which is 3.4.1 b1

Does someone have an approach for me how I can solve the problem.

[Phaedrux]

How long is the cable? Where is the shielding grounded to?
Can you gather a M122 report after the board has restarted?

[MichaelKallner]

@phaedrux
Hello,

The cable is a USB 3.0 Cable in 1.5 Meter. Also tested with 0.8 Meter. And also testet with unshielded Cable.

The Shield is grounded at GND on the Duet Board an other side GND on the sensor.
——

The Test Prozedure beginn normaly, because stops with the failure an shutown the board.

CSV Files are written with nothing inside an get a parsing failure.

Here is the M122, with no Sensor Connected (the Printer Runs currently)

——-
== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.4.1 (2022-06-01 21:05:28) running on Duet Ethernet 1.02 or later
Board ID: 0JD0M-9X6JA-JUNSS-6J1FL-3S46R-K9JMV
Used output buffers: 3 of 26 (15 max)
=== RTOS ===
Static ram: 23860
Dynamic ram: 70276 of which 240 recycled
Never used RAM 14512, free system stack 110 words
Tasks: NETWORK(ready,98.9%,211) HEAT(notifyWait,0.2%,326) Move(notifyWait,5.2%,304) MAIN(running,310.6%,450) IDLE(ready,0.1%,30), total 414.9%
Owned mutexes:
=== Platform ===
Last reset 01:40:36 ago, cause: software
Last software reset time unknown, reason: User, GCodes spinning, available RAM 17632, slot 1
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 0
MCU temperature: min 43.4, current 60.7, max 61.3
Supply voltage: min 23.8, current 24.1, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 99/1, heap memory allocated/used/recyclable 2048/22/0, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: ok, SG min 0
Driver 1: standstill, SG min n/a
Driver 2: ok, SG min 155
Driver 3: ok, SG min 0
Driver 4: ok, SG min 0
Driver 5:
Driver 6:
Driver 7:
Driver 8:
Driver 9:
Driver 10:
Driver 11:
Date/time: 2022-09-25 19:21:41
Cache data hit count 4294967295
Slowest loop: 213.08ms; fastest: 0.12ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 8
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 4.4ms, write time 26.0ms, max retries 0
=== Move ===
DMs created 83, segments created 14, maxWait 1960635ms, bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves 14620, completed 14603, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 2], CDDA state 3
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
Heater 0 is on, I-accum = 0.0
Heater 1 is on, I-accum = 0.4
=== GCodes ===
Segments left: 1
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is doing "G1 X333.724 Y-244.891 E0.1658" in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty
=== Network ===
Slowest loop: 208.37ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex

[RogerPodacter]

EDIT: Nevermind, i didnt read the entire thread before posting it looks like you already have the USB3.0 cable. sorry i dont have anymore more to add.

@michaelkallner I was having a similar issue the very first time i connected my LIS3DH, the board would restart every time i tried to take a measurement in the plugin. But i dont know what i did, the issue never returned. I have since changed to a USB3.0 wire as someone else gave me the link, so I pass it along to you in case it might help.

https://forum.duet3d.com/topic/22878/software-package-3-3beta3-released/68?_=1624809172098

[Phaedrux]

Do you have another accelerometer to test with?
Can you show some photos of the wiring?

[MichaelKallner]

@phaedrux
Hello,

I'm sending the pictures, I hope that's enough.

I tested a 2nd sensor. Also on another printer with the same result.

With a third printer I get an abort with the message INT1 error.

Verkabelt ist es wie im Bild:

[Phaedrux]

I can recommend adding a 1k resistor to SDO close to the sensor board which may solve capacitive coupling between SDO and CS.

[MichaelKallner]

@phaedrux
Hello, many thanks for the answer. I'll test that once. can you dare tell me how many watts the resistance must have or is that not important for this purpose?

[Phaedrux]

@michaelkallner said in Input Shaping Board shutdown during messureing:

not important for this purpose

[MichaelKallner]

@phaedrux
Hello, thank you very much for your help. Soldering the 1K resistor directly in front of the sensor board helped. I have a stable signal. Tested several times, flawless. I also think that the connected shielding also helps.

Thank you again.