Topics created by rs4race

You need either an H-bridge, or a DPDT relay plus a flyback diode to protect the drive mosfet. If you use a relay then you should be careful to reduce the motor current to zero and pause a short time before reversing the motor, otherwise you will get arcing over the relay contacts.

The heater outputs are inverted by default, because when they are used to drive heaters there is an inverting level shifter driving the MOSFET.

Reducing the microstep increases the accuracy.
1/8 - exactly
1/16 - more accurate
1/32 - super accurately
etc
Increase the accuracy if you turn on the microstep interpolation (I1)?

Thanks again! The Schottky diode works.

To sum things up. The 1N4148TA diode didnt work.
I Wired the LJ12A3-4-Z/BX inductive sensor as follows:
Power wires to always on fan channel (24V)
Blue is Ground
Brown is 24V

Signal wire to Z stop pin of Z stop Connector
Black - (Cathode) Schottky Diode - Z stop pin

In config I set

M574 Z2 S0 ; z axis homes in positive direction active low

And my Z home file

G91 ; Relative positioning
G1 Z200 F420 S1 ; Move quickly to endstop
G1 Z-2 ; Back off of endstop
G1 Z3 F60 S1 ; Move slowly to endstop
G92 Z186.5 ; Set Z axis position
G90 ; Absolute positioning

I hope this will help anyone with the same question.

Duet WiFi boards have unique MAC addresses. Duet Ethernet boards used to use the same default MAC address (along with Duet 0.6 and 0.8.5 boards), but in 1.19 series firmware the Duet Ethernet MAC address is derived from the unique MCU ID. So two or more Duet Ethernet boards will almost certainly have different MAC addresses when using 1.19 series firmware.

This is essentially what the "lookahead/planner" in the firmware already do. The jerk or instantaneous velocity change is the setting most related to this. The planner looks at the velocity change vector (dv) and determines how much it needs to slow the head down in order to be within this parameter.

This is a big problem for 8 bit controllers (obviously the Duet is 32 bit) as their move buffer often runs out on fast machines, especially when doing circles. In those cases, since the planner has no moves to compare the current velocity to, it comes to a complete stop at the next point and then picks up again from there.

Having the Web Config settings persist across browsers is a feature request for Chrishamm

PERFECT! Thanks for your help it works great.