Automatic Pause/STOP Print

ianlee74 · 27 Jun 2016, 19:46

I've been thinking about auxiliary devices that could be used to pause or turn off my printer in several different circumstances. This led me across this filament monitor which claims to work with several printer types but I don't see Duet listed.

https://www.toybuilderlabs.com/products/tunell-3d-printer-filament-monitor?variant=963597848

Is there a way to tell the Duet controllers to pause via a pin signal from a remote device? If not, then I would ask that you consider implementing this interface that these other controllers have apparently started including.

Thanks,
Ian

dc42 · 27 Jun 2016, 20:00

See commands M581 and M582 here http://reprap.org/wiki/G-code#M581:_Configure_external_trigger.

RCarlyle · 27 Jun 2016, 20:42

Ooh, nice, I am definitely putting one of my spare Tunell monitors on my Duet Wifi delta then.

ianlee74 · 29 Jun 2016, 03:35

Very nicely done, dc42!

Billhc83 · 29 Jun 2016, 16:32

Am I right in assuming that the P parameter in this command isn't implemented yet? That would be very useful indeed.

dc42 · 29 Jun 2016, 20:22

The P parameter of M581 isn't implemented. However, you can use any of the endstop inputs, including the 5 on the expansion bus even if no expansion board is connected.

Billhc83 · 29 Jun 2016, 23:10

Thanks for the clarification. That is great, I hope to try using this for a filament monitor, when the board arrives.

LeonMF · 18 Sept 2016, 21:42

@RCarlyle:

Ooh, nice, I am definitely putting one of my spare Tunell monitors on my Duet Wifi delta then.

I just tried hooking mine up and it doesn't power up with the 3.3V provided by the Duet Wifi.

dc42 · 19 Sept 2016, 05:41

Does it need 5V? You can get +5V from pin 1 of the expansion connector.

LeonMF · 19 Sept 2016, 13:24

@dc42:

Does it need 5V? You can get +5V from pin 1 of the expansion connector.

I'm pretty sure it does need 5V. I'm pretty sure it'll return 5V, too. Won't that be a problem for the E0 enstop input?

dc42 · 19 Sept 2016, 13:34

The end stop inputs will almost certainly tolerate 5V, however I don't want to guarantee that without further testing. So I suggest you use a 1N4148 or similar diode, connected cathode to the sensor output and anode to the end stop input.

ianlee74 · 3 Oct 2016, 22:28

@LeonMF:

I just tried hooking mine up and it doesn't power up with the 3.3V provided by the Duet Wifi.

Did you ever get this working? After a 40hr print failed this weeked after about 30 hrs, I'm ready to buy one of these if you've confirmed it works with the Duet WiFi.

Thanks,
Ian

LeonMF · 5 Oct 2016, 12:50

Ian,

I gave up on the Tunell monitor as I didn't want to risk the electronics on my Duet.

I designed a simpler filament monitor using an optical sensor and a housing to hold the filament in the path of the sensor. You could do the same thing with optical or mechanical endstops. It will get you the filament out detection but not the tangled filament or clogged nozzle detection.

ianlee74 · 5 Oct 2016, 14:30

@LeonMF:

I gave up on the Tunell monitor as I didn't want to risk the electronics on my Duet.

I designed a simpler filament monitor using an optical sensor and a housing to hold the filament in the path of the sensor. You could do the same thing with optical or mechanical endstops. It will get you the filament out detection but not the tangled filament or clogged nozzle detection.

Thanks for the update, Leon.

Ian