Printer Model: Zero G Mercury
MCU / Printerboard: Manta M8p
MMU: BTT MMB 1.0
Filter MCU: Nevermore Mini & Stealthmax PCB by isiks.tech
Host / SBC: CB1
Canbus speed 1mil if i remeber klippy.log (5.5 MB)
Describe your issue:
I am having Klipper load issues and Canbus Issues. usually at idle the printer is fine. sometimes when i try to home the mmu or gantry it will have an error usually related to canbus communication loss and th error says its a possible load issue. i also sometimes have i2c timeouts as well from the filter. i dont know if lowering the speed will fix my issue im curious on your thoughts.
This worked for another with CAN bus issues but should also work for i2c.
Redo your connectors, then use hot glue on the end of the connector where the wires are inserted to lock them in place. Also, anchor the wires close to the connector to keep them from moving.
I believe i have checked this in the past but have had no issue. i also double checked it but it is fine. but while printing my klipper load is 80 percent average maybe somewhat lower. but there are a lot of spikes into the 150-180% and sometimes i have seen more.
If you use unshielded wires for your CAN bus and i2C, failed transmissions can cause those buses to resend and consume processing cycles.
For unshielded; try not to run them near the stepper, bed heater, or hotend wiring; the frequency of PWM signals can be introduced into the CAN bus and i2C bus. Even though fans are controlled by PWM these have less energy use so less of a magnetic field on the wires so less chance of interference.
i do not have leds setup for happy hare since im running a tradrack. i do have an encoder though. maybe its trying to use the commands though ill look through the leds config sections to see.
As previously stated: There are several reports that HH is either outright causing such errors or in the best case fostering them.
If it is still the case or improvements have been made etc is beyond my knowledge and such reports only will get further attention if validated that a pristine Klipper is showing the same symptoms and equally validated that it is not caused by the well known TTC reasons.
