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TP 2240

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TMC-2240​

  • Input Voltage: 12V-36V
  • Applicable to: Klipper/RRF firmware
  • Driver Mode Support: TMC:SPI
  • Integrated temperature detection
  • Universal analog input full protection and diagnostics
  • Fully integrated lossless current sensing (ICS)
  • Step/Direction interface with microstep interpolation microPlyer
  • Short-circuit protection, undervoltage lockout, chip overtemperature protection (thermal shutdown)
  • Supports stallGuard2 high-precision sensorless motor load detection
  • Integrated StallGuard2 and StallGuard4 sensorless motor load detection
  • Jitter-free combination of StealthChop and SpreadCycle, solving motor jitter at chopper switching speed points.
  • Higher power, lower heat generation. (Supports higher voltage, 3.0A MAX, suitable for higher-end 3D printing work, and operates for longer periods without excessive heating or damage.)

TP2240 Reference Configuration​

Danger
  • The driver sense resistor is rref: 12300. Please do not set it incorrectly.
  • Only one of spi_bus and spi_software can be selected.

SPI Mode Reference Configuration​

[tmc2240 stepper_x]
cs_pin: 
spi_bus: 
# spi_software_mosi_pin:
# spi_software_miso_pin:
# spi_software_sclk_pin: 
run_current: 0.65                   # Motor running current value
interpolate: False                  # Whether to enable 256 microstep interpolation (not recommended)
rref: 12300
stealthchop_threshold: 0           # Quiet threshold (if quiet mode is not needed, set the value to 0)

Instructions for Using Endstop-Free Mode​

Infinite Position Usage Tips
  • Using infinite position requires occupying one limit port. Under normal circumstances, the first drive position uses IO1, the second drive position uses IO2, and so on.
  • When using infinite position, please note: do not connect anything to the corresponding limit port.
  • Some FLY motherboards are directly connected to the drive port. Please check whether DIAG is directly connected to the corresponding pin.
Endstop-Free Usage Tips
  • To use TP2240 without endstops, connect the DIAG jumper on the mainboard.
  • The original endstop_pin: needs to be commented out or deleted, then add endstop_pin: tmc2240_stepper_x:virtual_endstop
  • After configuring diag1_pin:, refreshing the endstop status will show Not Triggered.
  • Configuring driver_SGT: requires testing an appropriate value.
  • Reference Configuration
[stepper_x]
# endstop_pin:
endstop_pin: tmc2240_stepper_x:virtual_endstop
homing_retract_dist: 0        # Not changing the retract to 0 may cause homing failure

[tmc2240 stepper_x]
diag1_pin: ^!
driver_SGT: 1

#   After configuration, ensure the endstop status is Not Triggered
#   This pin typically uses the "^" prefix to enable internal pull-up
#   Sensitivity needs to be adjusted based on belt tension
#   (Ensure driver_SGTHRS is set to an appropriate sensitivity value)

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