Total hours of operation/printing feature.

jlipavsky79

Has any progress been made on this subject?
@dc42 ?

Topher

@dc42 The ideas in this thread are really good, has there been any implementation? I really like the idea of a total filament extruded, help to nip the clogged nozzles BEFORE they clog!

iff7378

I'd love to see this implemented. I have a Modix printer that uses Duet hardware and prints are regularly 24 hours or longer. Being able to set up preventive maintenance based on clocked print hours would be extremely useful. All of our other printers have this feature! (Craftbot, Flashforge, Stratasys)

chrisqwertz

Hi!

I think I have a solution to the problem:

create sys/runtime.g and add

global runtime = 0

in sys/config.g add

; init print time logging
if !exists(global.runtime)
  M98 P"runtime.g"

create sys/daemon.g if it doesn't already exist and add

if state.status == "processing"
  if exists(global.runtime)
    set global.runtime = {global.runtime + 10}
    echo > "runtime.g" "global runtime = " ^ {global.runtime} ^ " ; AUTO GENERATED by daemon.g"

This will increment the global variable "runtime" every time daemon.g is called by 10 and write the new value into runtime.g. This should be correct as daemon.g is called every 10 secs as of RRF 3.3

Let me know if it doesn't work for you.

T3P3Tony

@chrisqwertz

I like this solution, however its not good practice to use deamon.g in that way:

https://docs.duet3d.com/en/User_manual/Reference/Gcode_meta_commands#daemong

It is recommended to use a while loop inside the daemon.g file if you are using it to prevent the firmware having to open it every 10 seconds.

Better to put the loop inside daemon.g itself

while true
    if state.status == "processing"
        if exists(global.runtime)
            set global.runtime = {global.runtime + 10}
            echo > "runtime.g" "global runtime = " ^ {global.runtime} ^ " ; AUTO GENERATED by daemon.g"
    G4 S10 ;wait 10 seconds.

This will provide approximately 10 second increments to the run time log file.

You may be able to get a more accurate log by exploiting the object model "state.time" value.

chrisqwertz

@t3p3tony Ah i see, that makes sense. Thank you, your feedback is very much appreciated!

RogerPodacter

when i try to implement this function and add a daemon.g file, i get the following error. using RRF 3.4.2 and DWC 3.4.2.

Error: in file macro line 5 column 19: meta command: expected string expression

My daemon file is:

while true
    if state.status == "processing"
        if exists(global.runtime)
            set global.runtime = {global.runtime + 10}
            echo > "runtime.g" "global runtime = " ^ {global.runtime} ^ " ; AUTO GENERATED by daemon.g"
    G4 S10 ;wait 10 seconds.

also, i dont understand why its calling it a macro.

RogerPodacter

@RogerPodacter nevermind, i solved the issue by looking at the latest documentation: Gcode Meta

the echo command cannot have a space after the >.

Fixed code:

while true
    if state.status == "processing"
        if exists(global.runtime)
            set global.runtime = {global.runtime + 10}
            echo >"runtime.g" "global runtime = " ^ {global.runtime} ^ " ; AUTO GENERATED by daemon.g"
    G4 S10 ;wait 10 seconds.

justus2342

I like the idea of using the daemon.g. But what about the wear of the sd card? How smart can the controller of the sd card expected to be? Is it writing the exact same blocks over and over again? How bad is it for the card?

RogerPodacter

@justus2342 i dont know the answer, but i am not worried about it since 8gb SD cards are so cheap and common now, even if it accelerates the shelf life, i can live with replacing the SD card once every 2 years.

but its a good question. @dc42 may know.