@alankilian I think a single impulse before end of each move would not work. As I understand the code several Moves will be merged and planned together. It's documented here:

https://github.com/Duet3D/RepRapFirmware/blob/3.4-dev/Developer-documentation/Movement in RepRapFirmware.odt

@t3p3tony The motions are somewhat continuous , but not all the time and on all axes.

I want to generate for each Frame of the pre-rendered animation one line of g-code from within the application, that is used to generated the projected images (Cinema 4D).

The g-code would be generated so the time code axis would advance by 1 mm for each frame. I build a small Mikrocontroller that counts the pulses of the time code axis (no motor connected there) and generates MIDI time code from these impulses. The MIDI timecode ist then received by a beefy PC that can replay multiple 4k video stream simultaneously to the projectors in sync to the MIDI time code. I tested this and this works very nice, even when the system needs to slow down because of mechanical acceleration limits of the motion system - I just have the issue, that the projectors introduce a delay of about 30 ms. So currently the projections always lag behind the actual moves by an almost constant delay.

Introducing a constant negative delay for the projectors does NOT work. AT best one can achieve a situation where the delay in sometimes to small and sometimes to large, depending on the effects of the (hard to forsee in cinema 4d) acceleration limits of all axes within the duet.

So I would like to sync the video playback to the actual move as they can be made respecting the acceleration and speed limits as defined in the duet 3d system.

I'm an experienced software developer myself and already looked at the firmware where I would have to delay the commands before they are send to the motor controllers. So far I'm not sure where I would introduce the delay for best results.

I want to use a duet 3d board to control the movements of an exhibit with multiple axis. The Object will be projected on from different perspectives using digtal projectors. The projected content matches the moves of the exhibit.

I would like to have a extra "virtual" axis that advances one mm per frame to use this axis as a time code for the projectors. That way the projected images would always match the current position of the axis of the exhibit.

Problem:
All digital Projectors have a image processing delay of about 20 ms (or even more). Therefore I would like to delay all movements on all axes except the "timecode axis". Ist this possible?

I looked into the CAN expansion board. In the documentation is a M953 command that allows to shift time. Seems like this command is not (yet?) implemented?