Stuttering stepper motors and under voltage
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Well,
The stepper motors on my Kossel XL started stuttering and I did a M122. Could anyone point me to the culprit? I wonder if it are the drivers, a bad connection to the stepper motors or maybe the power supply connection (corsair sf450). Stepper motors are 2.4a and configured to 1.9a in the config.g. What steps can i follow to find out what the problem is? The board seems to be constantly powered as I don't see any leds flickering when the stuttering is there. Below my 122 results with the under voltage events that occurred:
DuetWifi on 1.18, no paneldue attached, printing by uploading through the webinterface.
Used output buffers: 1 of 32 (9 max)
=== Platform ===
Static ram used: 20320
Dynamic ram used: 72784
Recycled dynamic ram: 1104
Stack ram used: 968 current, 8104 maximum
Never used ram: 28760
Last reset 00:08:34 ago, cause: power up
Last software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Spinning module during software reset: GCodes, available RAM 33336 bytes (slot 4)
Error status: 0
Free file entries: 8
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 4.7ms
MCU temperature: min 30.6, current 33.0, max 37.1
Supply voltage: min 9.3, current 10.0, max 12.2, under voltage events: 11, over voltage events: 0
Driver 0: stalled
Driver 1: stalled
Driver 2: stalled
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-08-10 00:36:04
Slowest main loop (seconds): 0.082901; fastest: 0.000061
=== Move ===
MaxReps: 3, StepErrors: 0, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 1, completed moves: 0
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
Probe change coordinates:
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 0 is on, I-accum = 0.8
Heater 1 is on, I-accum = 0.4
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 1 in use
Movement lock held by file
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 1 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
Code queue is empty.
=== Network ===
WiFiServer is running
SPI underruns 0, overruns 0
=== Webserver ===
HTTP sessions: 1 of 8
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The first thing to check is that the screws in the VIN terminal block are tight.
