Ez/ tmc5160 running hot even on idle

[mdluffy777889]

Basic Information: sometimes at start up steppers are 50+ deg

Printer Model: ender 3 (stock motors)
MCU / Printerboard: e3ez (48v on x and y)
Host / SBC CB1
klippy.log

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Describe your issue:

installed an e3ez board with a CB1 on an ender 3 since im trying to convert it to an enderwire later on, 48v on both X n Y
lowered the run_current to 0.5 but the tmc5160 steppers are running hot compared to the 2209 and I thought they’ll be running cooler than the rest …
not all the time but most of the time can’t even touch them for a while, so put thermistors and they running 50+ sometimes and 35-40 at start up and not sure what’s the issue, the motors aren’t running hot per say but the steppers … and affraid it’ll make them brake or something
thanks for any help or guidance ˆˆ

klippy.log (508.3 KB)

[LifeOfBrian]

You should attach your klippy.log as advised by the template.
Otherwise nobody can check your current config and point towards any issues in there.

[mdluffy777889]

yes thank you … done now
tried to attach before and it didn’t work nor let me put more than one pic ˆˆ
cheers

[LifeOfBrian]

Yeah that is a spam restriction for new users.

Hm do you actively cool the stepper drivers?
Stealthchop at least causes more motor heat than SpreadCycle but i never checked my drivers.
Current seems to be reasonable for the printer.
Check with SpreadCycle and interpolate: true for testing purpose.

[mdluffy777889]

@LifeOfBrian

SpreadCycle

just the stock ender 3 electronics case for now, as the conversion to an underwire didn’t really start yet
also that’s how I was running it and sometimes its 50+ deg and for now its 45± on idle whilst

Laos tried with the interpolation off and increased the steps to 128 and same thing

[tmc5160 stepper_x]
cs_pin: PB8
spi_software_miso_pin: PC11
spi_software_mosi_pin: PC12
spi_software_sclk_pin: PC10

diag1_pin: ^!PC4 #^PF3

interpolate: True
run_current: 0.5

hold_current: 0.150

sense_resistor: 0.075
stealthchop_threshold: 999999

driver_SGT: 0