@dc42
Does the firmware or the board have lower limits that do not allow stepper motors to be handled slowly?

@dc42 thanks for your support

I wrote this line solving partially the problem
M203 X3500.00 Y3500.00 Z3500.00 E3500.00:3500.00:3500.00 I0.01

then i tested the extruder and i got these results
G1 E1 F2 requires 30"
G1 E1 F1 requires 60"
G1 E1 F0.5 requires 100" instead of 120"
G1 E1 F0.25 requires 100" instead of 240"

I need to reduce more the feedrate reaching G1 E1 F0.025

Hello everybody,

i'm using a 6HC board and i can't control the feed rate of my extrution with F.
The speed of the stepper motor doesn't change using different feed-rate
I tried to use these commands without changes:
G1 E1 F0.1
G1 E1 F1
The maximum velocity is
M203 X1200.00 Y1200.00 Z1200.00 E1200.00
Any ideas ?

Hello everybody,

i followed the procedure to connect my Duet3 6HC to my PC (Win10) via USB port and i installed the drivers from here

This is the situation:
-the DIAG/STATUS LED flashes steadily, about half a second off and half a second on;
-the 3.3V led is green and the 5V led is red;
-the board is not seen by "device manager".

The board is completely unrensposive, shall i erase the firmware ?

Regards