Stepper issues
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@jumpedwithbothfeet said in Stepper issues:
what I can’t understand is why it’s so different from the stock number?
Gear ratio. You didn't specify what extruder you're using for the direct drive conversion, but most likely it's using a 3:1 gear down, and with the stock creality motor being 1.8 degrees, your steps per mm for the extruder is going to be around 400. You'll have to do the calibration process to dial that in further.
To save any changes to the configuration you must edit the config.g file and save it and restart the board for it to take effect. Any configuration commands you send will only be active during that powered up session. Once it reboots the values are re-read from config.g so to make them permanent you have to change them there.
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@Phaedrux after changing the esteps like paul suggested the feed rate worked but when I checked config.g the rate was still at 93, I then calibrated using your guide and ended up with a figure of 98! I'm still stumped at what caused it but it's working at least.
I do now have a new issue mind in the form of AutoPID! am I right in thinking once you have carried out the tuning and send M500 it should save the values to the config-override.g? as it doesn't seem to be working every time I restart the printer from off I have to carry out AutoPID or my heatbed faults with slow heating time!
One step forward two steps back!
6HC Voron Trident based, 6XD CNC, Mini 5 polar printer
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@jumpedwithbothfeet I think you may be encountering an issue in RRF3 where config-override is not written correctly.
Can you send M115 and report the version string?
Are you using a rpi with your Duet 3?
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@Phaedrux Yup RPI3B+ with Duetpi gui
05/04/2020, 19:52:48
M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC v0.6 or 1.0 FIRMWARE_VERSION: 3.0 ELECTRONICS: Duet 3 MB6HC FIRMWARE_DATE: 2020-01-03b3I also copied my Autopid readings -
M307 H0
Heater 0 model: gain 150.3, time constant 632.1, dead time 1.0, max PWM 1.00, calibration voltage 23.9, mode PID
Computed PID parameters for setpoint change: P780.7, I31.671, D525.4
Computed PID parameters for load change: P780.7, I140.683, D525.4M307 H1
Heater 1 model: gain 311.0, time constant 120.0, dead time 4.2, max PWM 1.00, calibration voltage 24.0, mode PID
Computed PID parameters for setpoint change: P16.5, I0.735, D48.2
Computed PID parameters for load change: P16.5, I1.492, D48.2 -
Alright, I'm not sure if that particular issue has been resolved yet, but there was just an update released the other day for the Duet3+pi which you should look into updating to as there has been a lot of work done since version 3.0.
https://forum.duet3d.com/topic/15317/reprapfirmware-3-01-rc6-released
https://forum.duet3d.com/topic/15342/duet-web-control-2-1-1-released
https://forum.duet3d.com/topic/15343/dsf-1-3-1-unstable-released -
@Phaedrux no worries I was holding off updating till I got a basic grasp of how everything works, ill make that my first job now, if it sorts out the override happy days, if not I believe I can manually edit the override.g with the Autotune figures If I read the guide correctly
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@jumpedwithbothfeet My Bad.
and apologies.
I forgot to tell you that part about changing the config.g and saving it.I'll go back to my corner now!
Paul -
@PaulHew not your fault bud, I’m the novice here I think I’ve even messed up the firmware upload it’s taking forever to install!
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@Phaedrux the firmware upload I suspect has locked up, I have “please wait while updates are being installed...” there are no system files on display and it’s been at least 30mins so far is there anything I can do or should I just wait?
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Seeing as you're using the raspberry pi I believe the means of updating would be to use apt update on the pi. I believe you'd also need to have the unstable repository added.
https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3#Section_Software_Installation
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@Phaedrux does that not only apply to raspbien? I’m running duetpi running sudo update/upgrade was one of the first things I did when I installed the board.
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I think you'd still need the unstable repository added to get the latest.
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@Phaedrux i think it did it, i ran M115 again and got this -
M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.01-RC6 ELECTRONICS: Duet 3 MB6HC v0.6 or 1.0 FIRMWARE_DATE: 2020-04-03b3hopefully this will help solve some issues, thank you for your help its much appreciated
