Filament load macro whith sensor

[toddel]

Hello...

i'm using the bondtech prusa extruder on my corexy. It has the prusa IR Filament Sensor built in near the gears.

I'm looking for a macro that does nearly the same as the prusa printers:

Heat the nozzle up
when temp is reached a message appears "Now you can load Filament"
When now the sensor triggers the filament loading should start...

How can i adress the sensor for that? Or has anyone this running already?

[T3P3Tony]

How are you connecting the prusa IR sensor? from memory these connected by I2C to the prusa board.

[A Former User]

@T3P3Tony said in Filament load macro whith sensor:

connected by I2C

thats the laser sensor, the FINDA acts like any inductive npn probe afaik

[toddel]

@T3P3Tony

; Filament Sensor
M591 D0 P2 C"io8.out" S0 0 ; Filament Sensor an E0, Endstop IO8, Mode P1 Signal high when Filament in, S1: Pause on error

[toddel]


Made a plan, sorry i just have PowerPoint here

So how can i read the property of the filament sensor?

Is there any source/manual how to speak the printers language?

[T3P3Tony]

Potentially use

https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_Configure_external_trigger

However this looks like an opportunity to use the Gcode meta commands, have you looked at this:
https://duet3d.dozuki.com/Wiki/GCode_Meta_Commands

[toddel]

@T3P3Tony
Yes. Thanks. Thats what i'm searching for... Meta Commands...

Nice. Now i need the name/how to check filament sensor state...

But i'm a step further now...

Thanks

[T3P3Tony]

@toddel and for that you can look at the Object Model
https://duet3d.dozuki.com/Wiki/Object_Model_of_RepRapFirmware

I believe that OM documentation is yet to catch up with the very latest firmware build (which you should use for this) however use M409 to see the OM as a JSON stucture
https://duet3d.dozuki.com/Wiki/Gcode#Section_M409_Query_object_model

[toddel]

When i try:

M409 K"sensors.filamentMonitors" F"filamentPresent"

-> {"key":"sensors.filamentMonitors","flags":"filamentPresent","result":[{"filamentPresent":true}]}

When i try:

echo !sensors.filamentMonitors[0].filamentPresent

-> false

Hmm what's wrong?

[toddel]

echo sensors.filamentMonitors[0].filamentPresent works ‍️‍️

[toddel]

@T3P3Tony

Got it running!

if sensors.filamentMonitors[0].filamentPresent = true
M291 P"Es ist noch Filament geladen. Möchten Sie es entladen?" R"Filament noch geladen!" S3
;call unload.g
if sensors.filamentMonitors[0].filamentPresent = false
M291 P"Extruder wird zum laden aufgeheizt" R"Extruder wird aufgeheizt" S2
M109 S220 ;Wait for extruder
while true
M291 P"Filament einlegen..." R"Filament einlegen" S1
if sensors.filamentMonitors[0].filamentPresent = true
G1 E10 F100
G1 E100 F300
break

Is there a way to ask the user after G1 E100 "Color OK?" with anwer options Yes(break), No(another G1 E100) and Abort(break)?

Then its finished...

[Kolbi]

@toddel I made a similar macro set that may interest you.
https://forum.duet3d.com/topic/17566/single-macro-for-filament-handling/15

[mitch]

I am having issues with this macro while using the Duet3D laser filament sensor.

; Filament is currently loaded
if sensors.filamentMonitors[0].filamentPresent = true
M702 ; Unload filament as previously configured

Does the laser sensor only detect movement and is unable to detect filament presence when it is stationary? In the console when I enter:

echo sensors.filamentMonitors[0].filamentPresent

I get "null"

m591 d0
Duet3D laser filament monitor v2 on pin e0stop, enabled, allow 15% to 110%, check every 3.0mm, version 2, quality 223, brightness 255, shutter 86, no calibration data

[oliof]

@mitch I think your question should be in its own thread so it gets the proper attention.

[mitch]

I have been searching around the forum tonight leading me to several "indirect filament sensor" threads. I believe the answer to my question above is yes. The sensor detects movement and not presence.

The laser filament sensor does have an input for a micro switch but most of the mods do not use it. I must just have an unusual use case in wanting to take advantage of the static state of knowing if filament is loaded. I was using this information to automate startup and printing.