@Lexan said in Replace HS557 with 1HCL:
Is it possible to replace the closed loop HS557 driver with the 1HCL extension board?
Yes, if the main board is a Duet 3 series board (including Duet 3 Mini) and the motor is a 1.8deg (or higher) motor with an encoder pulses per revolution of at least 1000 (transitions per revolution at least 4000).
Which axis or extruder does the driver control?
Does the HS557 driver provide an error output that the Duet could monitor?