Topics created by mundsen

Most (or all?) the general I/O_0 to I/O_8 outputs have PWM capability.

They are 3.3V levels, which will work with many things, but you can add a 3.3v > 5V converter if needed.

The specific 5V PWM is just a buffer from OUT9, which you should be able to emulate with a couple of resistors & possibly a transistor or logic gate.

Or even just the OUT9 pin (which switches to 0V) with a separate pullup to a 5V source from another connector?

@Phaedrux I've been trying to configure in the RRF configuration tool but I get stuck in missing one of the stepper motor drivers.. Not sure how to add the "ghost driver" or how one would call it, the one on the other side that copies the other one exactly. (yes I'm that new)

I have a very slightly different setup, two "in front" and one in "Center back". I believe you can update this fairly easily.

Relevant statements extracted from config.g:

; Driver to axis mapping M584 X0 Y1 U2 Z3:4:5 ; X and Y for CoreXY. U for toolchanger lock. Z has three drivers for kinematic bed suspension. M569 P3 S0 ; Drive 3 direction | Front Left Z M569 P4 S0 ; Drive 4 direction | Front Right Z M569 P5 S0 ; Drive 5 direction | Back Z ; Leadscrew locations (really, kinematic coupling locations) extracted from CAD model assuming back right build plate corner is (0, 0) M671 X300:5:152.5 Y316:316:-14 S10 ; Front Left: (300, 316) | Front Right: (5, 316) | Back: (-14, 152.5) M350 Z16 I1 ; Set 16x microstepping for axes. Use interpolation. M906 X2500 Y2500 Z1000 E1250 I30 ; Motor currents (mA) and Idle percentage M201 X600 Y600 Z10 E1000 U1000 ; Accelerations (mm/s^2) M203 X25000 Y25000 Z400 E4000 U10000 ; Maximum speeds (mm/min) M566 X700 Y700 Z2 E3000 U200 ; Maximum jerk speeds mm/minute M92 Z3200 ; Steps/mm for Z - TR8*4 / 0.9 deg stepper

And bed.g (note that front left is a little offset in Y because of a temporary thing that blocks that corner of the bed):

G0 X152.5 Y40 H1 F10000 G30 P0 X152.5 Y40 Z-99999 ; probe near back leadscrew G0 X275 Y260 H1 F10000 G30 P1 X275 Y260 Z-99999 ; probe near front left leadscrew G0 X25 Y315 H1 F10000 G30 P2 X25 Y315 Z-99999 S3 ; probe near front right leadscrew and calibrate 3 motors G1 X0 Y0 F10000

I have a config for a RailCore II / Duet 3 / SBC that's compatible with 3.0 or 3.01 here:
https://www.dropbox.com/sh/pg0ugu5qunokjc9/AAD8PkPqVGPp-yWV5Cug3_Usa?dl=0

Some sample conditional gcode examples here: https://www.dropbox.com/sh/gb8v16bgmyzq78t/AABgqjcDaqf4cLirguvjDlFfa?dl=0

P.S. I always start my SD card for a Duet Pi with the Duet provided image (plus and update/upgrade, of course). It seems lots of people start with other flavors of Raspbian or even other Distro, and it works. I am just being conservative regarding "reproducible" behaviors on the Duet systems.