Morgan Olsson wrote: > Den 2008-01-16 16:42:52 skrev Timothy Weber : > >> I have a favorite way to put them on the end of a cable, if that's >> relevant to your application. That's the main reason I use them - if I >> were putting them on on a PCB I'd use some other sensor that isn't >> single-source, but the TO-92 package makes it easier. > > As an alternative for small active sensors: > > o IIRC, there exist temperature sensors with PWM output. > > o I have used analog 10mV/C TO92 sensors (LM35?) for simple straight analog cirquitry. True. At the end of a cable going through some other machinery that was possibly noisy, I felt better with a digital sensor - if the checksum is bad, you know there was a transmission error; there's no such failsafe with analog or PWM output. -- Timothy J. Weber http://timothyweber.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist