External trigger wired on duex5

Ntrack

I did some tests to rule out wiring issues. I deleted all M581 commands from /sys/config.g and started the printer in “single” folder. Now it is heating the bed without restarting the board but the switch is not triggering even if it is defined in /sys/single/config.g . So it’s not a roblem with the wiring.
I’ve had weird issues with endstops on duex5 before (X,Y hiting endstops during homing but continue movement)so I moved all endstops on the duet board. I will have to try that to make sure my files are correct.

dc42

It sounds like a ground noise issue to me. Is the ground side of the VIN terminal block on the DueX5 connected directly to the corresponding terminal of the Duet by a short thick wire, as described in the DueX5 wiki pages?

Ntrack

@dc42 I canged the PSU some time ago.I’ll check that wire, I might have forgot about it.

Ntrack

Yes, it was that short wire. I forgot to connect one end to the duet board.

dc42

So it's working now?

Ntrack

~~Yes, everything is working as intended.~~ It is still not working...
Same as before, it restarts, in /multi folder and , after that M999 doesn't do anything. I have to power off/on manually.

dc42

@Ntrack said in External trigger wired on duex5:

~~Yes, everything is working as intended.~~ It is still not working...
Same as before, it restarts, in /multi folder and , after that M999 doesn't do anything. I have to power off/on manually.

Does it work after changing the rocker switch apart from not responding to M999?

If you send M115 after changing the rocker switch, does it still report the presence of the DueX ?

Ntrack

M115 doesn't show the Duex and also console reports random weird over temperature warnings on drivers when I try to home the printer .
In single mode it works until current is sent to the bed.I mean that I can set it as active and it will not reset, but it resets in multi as soon as I set a temperature and the bed starts heating.Once it resets in multi M115 does not show the duex and over temp warnings show up if I try to home the printer .

Ntrack

@Ntrack said in External trigger wired on duex5:

M115 doesn't show the Duex and also console reports random weird over temperature warnings on drivers when I try to home the printer .
In single mode it works until current is sent to the bed.I mean that I can set it as active and it will not reset, but it resets in multi as soon as I set a temperature and the bed starts heating.Once it resets in multi M115 does not show the duex and over temp warnings show up if I try to home the printer .

I can also home only X axis (Z and Y being connected on duex, U and W won't home even if they are on duet wifi and configured as sensorless). Also I noticed that M999 does work somewhat - X axis appears as not homed after it - but it stays in multi mode.

dc42

@Ntrack said in External trigger wired on duex5:

In single mode it works until current is sent to the bed

That indicates that you still have a problem with the power wiring. The negative wire from the PSU must go to the negative VIN terminal of the Duet, and from there via a short thick wire to the negative VIN terminal of the DueX. Do not use a separate wire from the negative VIN terminal of the DueX to the PSU.

The positive VIN wiring is less critical, but is best done in the same way.

Ntrack

I’m redoing all the wiring just in case. How short the wires from diet to duex should be?

dc42

@Ntrack said in External trigger wired on duex5:

I’m redoing all the wiring just in case. How short the wires from diet to duex should be?

Those VIN wires (especially the ground one) should be as short as possible. With the two boards mounted next to each other, there is on reason for them to be longer than 120mm. The wires from the PSU should go to the Duet VIN block first, then wires from the Duet to the DueX VIN block. This ensures that bed heater current doesn't flow in the wires between the Duet and DueX.

Ntrack

I redid the wiring that way and it works now. I left both the positive and negative 12cm short.Thank you.