Configure external trigger - using Momentary Switch for LED

callielli

Hi guys,

I have a question for the brains' trust.

Can I use M581 to turn on an LED strip light via the Duet3?

The PSU voltage and the LED are both 24V, I have a momentary switch spare which I can change to a latching setup however if I can direct the power through the board and use the mom-switch acting as a an end stop trigger of sorts, that would be my preference.

Is M581 able to be used without a print being active? Or is it only called from inside a processing G-Code file?

Would my code look something like:

M581 P"e0stop" T2 C1 ; invoke trigger 2 when a rising edge is detected on the E1 endstop input

but need to define a trigger too?

Thanks everyone

aidar

Using Duet3 board makes me assume you are using latest firmware on it. So:

https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_RepRapFirmware_3_01RC2_and_later

Phaedrux

Send M115 to verify what firmware version you are actually using. should be 3.1.1

callielli

@Phaedrux FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.01-RC9 ELECTRONICS: Duet 3 MB6HC v1.01 or later FIRMWARE_DATE: 2020-04-21b1

callielli

@Phaedrux

From what I can see there, M581 can be triggered when the SD card has an active GCode being printed.

Is there a function I can use to trigger all the time? ie: when the Duet has power?

Phaedrux

@callielli said in Configure external trigger - using Momentary Switch for LED:

Is there a function I can use to trigger all the time? ie: when the Duet has power?

That is the default of the R parameter as far as I read it.

@callielli said in Configure external trigger - using Momentary Switch for LED:

FIRMWARE_VERSION: 3.01-RC9

Please update to 3.1.1

callielli

@Phaedrux

I have just tried to upload the firmware downloaded via the RRF Config tool and get an error:

M997 S0

Error: M997: In-application programming binary "Duet3_SDiap_MB6HC.bin" not found

callielli

@callielli said in Configure external trigger - using Momentary Switch for LED:

@Phaedrux

I have just tried to upload the firmware downloaded via the RRF Config tool and get an error:

M997 S0
Error: M997: In-application programming binary "Duet3_SDiap_MB6HC.bin" not found

I will try to start from scratch on a formatted card as I am not confident the issue hasn't been introduced by something silly I might have missed.

Phaedrux

https://github.com/Duet3D/RepRapFirmware/releases/download/3.0/Duet3_SDiap_MB6HC.bin

You're just missing the IAP file from the 3.0 release.

callielli

@Phaedrux

Thanks, I'll get it in there!

Appreciate your guidance!

callielli

M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 MB6HC FIRMWARE_VERSION: 3.1.1 ELECTRONICS: Duet 3 MB6HC v1.01 or later FIRMWARE_DATE: 2020-05-19b2

Sorted - thanks mate!