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Version 2 differential-IR board. MAX31855 thermocouple and Duet 0.6

Posted by veryevil 
Version 2 differential-IR board. MAX31855 thermocouple and Duet 0.6
December 09, 2018 09:10AM
Looking to put a thermocouple on my duet on my ormerod 2. Still running a duet 0.6 with DC42's Version2 differential IR board.

I assume I will have to put the hot end fan back to the duet and only use the IR board for z sensor control. Guess the new mini IR board might be useful.

Anything else worth knowing about?

Thanks Steven
Re: Version 2 differential-IR board. MAX31855 thermocouple and Duet 0.6
December 09, 2018 10:56AM
Quote
veryevil
I assume I will have to put the hot end fan back to the duet and only use the IR board for z sensor control. Guess the new mini IR board might be useful.

The hot end board won't control the fan without a thermistor. With no thermistor connected, the heatsink fan will run continuously.

You will need to feeds the thermocouple wires right back to the thermocouple adapter board, which should be close to the Duet. Thermocouple wires pick up interference easily, so keep them twisted all the way to the adapter board.



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

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