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Additional fan on Duet board 0.6

Posted by swaroop

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swaroop

Additional fan on Duet board 0.6
April 10, 2018 08:47AM

Registered: 8 years ago
Posts: 35

Hi to all,

I have Duet board 0.6 and I want to add fan controlled. I can use expansion header pins in duet board 0.6?

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dc42

Re: Additional fan on Duet board 0.6
April 10, 2018 04:10PM

Registered: 12 years ago
Posts: 14,691

There is already one controlled fan output on the Duet 0.6 so I presume you mean you want to add a second one.

You would need to pick an unused heater pin on the expansion bus, connect an external MOSFET to it to drive the fan, and rebuild the firmware with a modified Pins_Duet.h file to allocate that pin to a fan instead of a heater.

Edited 1 time(s). Last edit at 04/10/2018 04:11PM by dc42.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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swaroop

Re: Additional fan on Duet board 0.6
April 11, 2018 02:47AM

Registered: 8 years ago
Posts: 35

Hi dc42,

I am new to duet board. and i want to know where is the Pins_Duet.h is located and also what changes i have to make in sys folder? please help me in detailed?

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dc42

Re: Additional fan on Duet board 0.6
April 11, 2018 04:28PM

Registered: 12 years ago
Posts: 14,691

Pins_Duet.h is at [github.com]. Documentation for files in the /sys folder of the SD card is in the wiki at duet3d.com.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].