in pratica si legge:
In the above picture, if Klipper is requested to move along the red line and if each black line represents the nominal location to step a stepper, then in the middle of that movement Klipper will arrange to take a step, change the step direction, and then step back. Klipper can perform this step, direction change, and step back in a very small amount of time.
It is our current understanding that the TMC2208 and TMC2224 will react poorly to this when they are in "stealthchop" mode. (It is not believed any other TMC drivers are impacted.) It is believed that when the driver sees the two step requests in a small time frame that it dramatically increases current in anticipation of high acceleration. That high current can trip the driver's internal "over current" detection which causes the driver to disable itself.
This pattern of steps can occur on all stepper motors and on all robot kinematics.
The TMC2208 and TMC2224 do work well with Klipper when run-time configuration mode is used (that is, when a wire is routed from the micro-controller to the PDN-UART pin and the printer config file has a corresponding [tmc2208] config section). When using run-time configuration, either configure the drivers to use "spreadcycle mode" or configure them to use "stealthchop mode" with a reasonable "stealthchop threshold". If one wishes to exclusively use "stealthchop" mode with run-time UART configuration then make sure the stealthchop_threshold is no more than about 10% greater than the maximum velocity of the given axis. It is speculated that with a reasonable stealthchop threshold, then if Klipper sends a "step, direction change, step back" sequence, the driver will briefly transition from stealthchop mode, to spreadcycle mode, and back to stealthchop mode, which should be harmless.
Sottolineo che però i 2208 e 2204 utilizzano lo stealthchop2 Gli altri TMC lo stealthchop "1". Comunque in uart i problema scompare. (entro certi limiti).
In pratica come ti trovi con klipper visto che stai usando i 2208 in standalone?