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cheap temperature sensors for arduino project

  • 27-09-2013 10:50am
    #1
    fl4pj4ck
    Closed Accounts Posts: 2,000 ✭✭✭


    looking to pick up some of those to make a controller for PC fans
    ideally I want the flat ones, any word where would I find them?


Comments

  • #2
    ozmo
    Registered Users, Registered Users 2 Posts: 3,888 ✭✭✭ozmo


    Pretty much any diode you have (or desolder from an old electrical item) should be good enough and are tiny...
    http://www.micro-examples.com/public/microex-navig/doc/098-temperature-sensor.html


    I've used metal capped transistors (BC109 - but many other kinds will do) before as I had them handy and they worked fine for my purpose.

    “Roll it back”



  • #3
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    Cheap thermistors with a 10k pull up resistor, nice big signal, easy to covert back to a temp in software.


  • #4
    humbert
    Registered Users, Registered Users 2 Posts: 5,238 ✭✭✭humbert


    I've used the LM35 which was easy and inexpensive.


  • #5
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    humbert wrote: »
    I've used the LM35 which was easy and inexpensive.

    Microchip do an even cheaper version of these, from memory...


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