problem with stepper x Undervoltage

[sima35]

TMC 'stepper_x' reports error: GSTAT: 00000004 uv_cp=1(Undervoltage!)
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Printer is shutdown

[stepper_x]
step_pin: PC0
dir_pin: PC1
enable_pin: !PA8
rotation_distance: 40
microsteps: 32
full_steps_per_rotation: 200
endstop_pin: ^PB4
position_endstop: 120
position_max: 120
homing_speed: 85

[tmc2209 stepper_x]
uart_pin: PA3
tx_pin: PA2
uart_address: 0
run_current: 0.800
stealthchop_threshold: 0

[pepegragera]

I have the same problem with the 0.2 but with the TMC AND Cheetah 3.0 board

[quarkvalk]

set the following 2209 sense resistors to 0.220 not 0.110 on Cheetah 3.0 and 2.0. Cheetah 1.2 is 2208 and 0.110 is correct there. Looks like an oversight when they changed bom from 1 to 1.1 and onward. You can verify this by checking the boards config in the standalone repo: cheetah 3.0 cfg . The Cheetah 2.0 repo doesn't have a sense_resistor entry, so it's defaulting to .110 which is incorrect. You can see on the schematic: page 5 that 2.0 uses the .220 resistor below. Another way to verify is to look at the physical board, near the outputs for the steppers you can see a pair of parrell resistors marked R220 (photo reference below).

[tmc2209 extruder]
sense_resistor: 0.220

[tmc2209 stepper_x]
sense_resistor: 0.220

[tmc2209 stepper_y]
sense_resistor: 0.220

[tmc2209 stepper_z]
sense_resistor: 0.220