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| author | Kevin O'Connor <kevin@koconnor.net> | 2018-05-05 13:04:01 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2018-05-05 13:06:55 -0400 |
| commit | cd9e21e3aab38fc767220be79e138beb05f5d473 (patch) | |
| tree | f24de43da65eaf0c83ee6e65a80cab4bc50a8f63 | |
| parent | 7fd14848ca1031884f1ff15453d45e0d454f0f18 (diff) | |
| download | kutter-cd9e21e3aab38fc767220be79e138beb05f5d473.tar.gz kutter-cd9e21e3aab38fc767220be79e138beb05f5d473.tar.xz kutter-cd9e21e3aab38fc767220be79e138beb05f5d473.zip | |
FAQ: Add item on TMC2208 being disabled in the middle of a print
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
| -rw-r--r-- | docs/FAQ.md | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/docs/FAQ.md b/docs/FAQ.md index 5c54f93b..7223d76b 100644 --- a/docs/FAQ.md +++ b/docs/FAQ.md @@ -11,9 +11,10 @@ Frequently asked questions 8. [Why can't I move the stepper before homing the printer?](#why-cant-i-move-the-stepper-before-homing-the-printer) 9. [Why is the Z position_endstop set to 0.5 in the default configs?](#why-is-the-z-position_endstop-set-to-05-in-the-default-configs) 10. [I converted my config from Marlin and the X/Y axes work fine, but I just get a screeching noise when homing the Z axis](#i-converted-my-config-from-marlin-and-the-xy-axes-work-fine-but-i-just-get-a-screeching-noise-when-homing-the-z-axis) -11. [When I set "restart_method=command" my AVR device just hangs on a restart](#when-i-set-restart_methodcommand-my-avr-device-just-hangs-on-a-restart) -12. [Will the heaters be left on if the Raspberry Pi crashes?](#will-the-heaters-be-left-on-if-the-raspberry-pi-crashes) -13. [How do I upgrade to the latest software?](#how-do-i-upgrade-to-the-latest-software) +11. [My TMC motor driver turns off in the middle of a print](#my-tmc-motor-driver-turns-off-in-the-middle-of-a-print) +12. [When I set "restart_method=command" my AVR device just hangs on a restart](#when-i-set-restart_methodcommand-my-avr-device-just-hangs-on-a-restart) +13. [Will the heaters be left on if the Raspberry Pi crashes?](#will-the-heaters-be-left-on-if-the-raspberry-pi-crashes) +14. [How do I upgrade to the latest software?](#how-do-i-upgrade-to-the-latest-software) ### How can I donate to the project? @@ -197,6 +198,20 @@ a higher speed. So, for a Z axis with a very precise step_distance the actual obtainable max_z_velocity may be smaller than what is configured in Marlin. +### My TMC motor driver turns off in the middle of a print + +There have been reports of some TMC drivers being disabled in the +middle of a print. (In particular, with the TMC2208 driver.) When this +issue occurs, the stepper associated with the driver moves freely, +while the print continues. + +It is believed this may be due to "over current" detection within the +TMC driver. Trinamic has indicated that this could occur if the driver +is in "stealthChop mode" and an abrupt velocity change occurs. If you +experience this problem during homing, consider using a slower homing +speed. If you experience this problem in the middle of a print, +consider using a lower junction_deviation setting. + ### When I set "restart_method=command" my AVR device just hangs on a restart Some old versions of the AVR bootloader have a known bug in watchdog |