I have been using a modified Marlin firmware for controlling a CNC machine.

3D Printing GCodePrintr
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I have been using a modified Marlin firmware for controlling a CNC machine. I use the same g-code than for 3D printing but I have no heaters and no thermistors. I was testing GCode Simulator too see if it might fit for getting rid of the PC and use a tablet instead for sending the g-code to the Arduino Mega, but I keep on getting Timeout waiting for printer response at line #0. I guess it is due to the fact that “M105” command is responded with “Error: No thermistors - no temp”.

Do you think that will preclude the normal sending behaviour of your application? (Of course the graphical representation is non existing but I could live without it).

Thanks a lot.

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miguel meanwhile play with firmware…
add an resistor on t0 and you resolve fast this issue .

or define this value…
#define HEATER_0_MINTEMP -100//5
#define HEATER_0_MAXTEMP 50000//275

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@Mauro_Manco Good idea :slight_smile:

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just update…i look now shauki configuration with him value for no have fault with thermoresistor, him no use it for printing :stuck_out_tongue:

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Miguel, you should take a look at cyclon’s pcb factory modified marlin :smiley:

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Thanks @Nicolas_Arias , you saved me a resistor :slight_smile:

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yes, M105 commands will timeout because the App is waiting for an “ok” response from the printer. It should not preclude the other commands , M105 will just delay them. You could try disabling “strict mode” in the communication options or reduce the timeout.

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Thanks @Mathias_Dietz . I did as @Mauro_Manco suggested and enabled the thermistor and disabled the low temperature limit on Marlin so It provides the expected response. Everything looked ok, I bought the app and tomorrow morning I will give it a go in the workshop. My machine is 2000x1200mm size but, as I said, having a graphical display is not a priority, I just hope X and Y values are not truncated /(currently I have setu the largest size available of 600x600 on the app).

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ok. the bed size config is just for the graphical display. it will not truncate the gcode coordinates when printing

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It is working happily with GcodePrintr https://www.youtube.com/watch?v=lT_-fAsAlsg and the gcode network send works great for us.