Pages: [1]   Go Down
Author Topic: type k termocouple opamp driven with arduino uno  (Read 677 times)
0 Members and 1 Guest are viewing this topic.
lucban , quezon. philipines
Offline Offline
Newbie
*
Karma: 0
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 548
Posts: 27372
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

How about this part instead?
AD595
https://www.sparkfun.com/products/306

Or fake it with differential input op-amp into an ADC.
« Last Edit: October 23, 2013, 10:40:06 pm by CrossRoads » Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

United Kingdom
Offline Offline
Tesla Member
***
Karma: 227
Posts: 6637
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

How about this part instead?
AD595

Yes, he can get that from http://ph.element14.com/. They can also supply the MAX6675.
Logged

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.

lucban , quezon. philipines
Offline Offline
Newbie
*
Karma: 0
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

lucban , quezon. philipines
Offline Offline
Newbie
*
Karma: 0
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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.

Logged

Pages: [1]   Go Up
Jump to: