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Thermocouple extruder and MAX6675

Posted by heba

heba

Thermocouple extruder and MAX6675
February 18, 2014 05:44PM

Registered: 10 years ago
Posts: 5

I have a thermocouple extruder and RAMPS so I bought MAX6675
Max6675
because I have read that MAX work with RAMPS ,but I can't find any draw show me how to connect RAMPS to MAX, any one can help ?
,
Second question ,
can I remove the thermocouple from the extruder and put a thermistor instead of it to connect it directly to RAMPS, If the answer is yes,
how much thermistor shoud I put ?

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bobc

Re: Thermocouple extruder and MAX6675
February 18, 2014 06:32PM

Registered: 12 years ago
Posts: 1,236

That link points to a MAX31855. It will make a difference.

However, they both use SPI so you would need to connect to the AUX3 header.

It would be best to use a 100K NTC thermistor, e.g. Epcos B57540G1104F.

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Open Source in a nutshell: the Four Freedoms
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heba

Re: Thermocouple extruder and MAX6675
February 18, 2014 06:40PM

Registered: 10 years ago
Posts: 5

Ok , Thanks a lot
How can I use AUX3 header ?

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DreamALike35

Re: Thermocouple extruder and MAX6675
July 23, 2014 12:32PM

Registered: 9 years ago
Posts: 5

aux3 clk-sck=D52 do-miso=D50 cs-ss=D49

Edited 1 time(s). Last edit at 07/23/2014 12:33PM by DreamALike35.