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Topic: type k termocouple opamp driven with arduino uno (Read 798 times) previous topic - next topic

arienth

hello to all! im a newbie but i already built several projects using arduino . my next project was a 4 channel type k termocouple sensor termometer. and as i know there was a termocouple amplifier the max31855. but my problem is here in the phillipines i cant find any. can i used ordinary op amp to drive my termocouple. please help me and thanks in advance.

CrossRoads

#1
Oct 24, 2013, 05:38 am Last Edit: Oct 24, 2013, 05:40 am by CrossRoads Reason: 1
How about this part instead?
AD595
https://www.sparkfun.com/products/306

Or fake it with differential input op-amp into an ADC.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

dc42


How about this part instead?
AD595


Yes, he can get that from http://ph.element14.com/. They can also supply the MAX6675.
Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

arienth

oh yes thank you guys i started this arduino thing just a couple of months and i realy enjoy doing my projects .thanks to arduino community you all guys really helps us . more power to you and god bless.

arienth

hi . ahm regarding on my project and i just want to expirement on op amp driving 4 thermocouple,  since i had a  week before i got  a  max 31855 . i already built op amp to drive my thermo couple. and i can display it on  lcd. i just satisfied with the results. my only problem is to have a two decimal point on the reading. can you guys have sample code to display 4 temp from four termocouple via op amp and must have at least 2 decimal point on the display. im sorry for my written english im not good at it. thank u in advance.


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