1 Topic by Claghorn

  • Claghorn
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  • From: Delray Beach, FL
  • Registered: 2012-10-22
  • Posts: 730

Topic: Unused pins in new printrboard motherboard?

I was poking around in the firmware source code, and it looks as if ifdef code already exists for hooking up a KILL_PIN that will shutdown the print job when raised. That would be a great thing to hook a microswitch to that could notice when the filament ran out.

I haven't correlated all the arduino pin numbers with the actual board. Does  anyone happen to know if one of the pins used for the in-circuit programmer happens to be un-used by anything else on the board? It would be really trivial to push a jumper on one of those headers and really painful to solder in the missing header :-).

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2 Reply by Hazer

  • Hazer
  • Hazer
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  • Registered: 2013-07-19
  • Posts: 478

Re: Unused pins in new printrboard motherboard?

The ICSP header that has the pins on it are connected to the built-in SD card holder, which is not used or supported. You can use those pins as IO as long as you redefine the pin numbering for those pins (CLK, MISO, MOSI need to be changed in pins.h, fastio, and sd2pinmap).

It would be better if someone could get the Change Filament feature working with a filament sensor though.

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