Temperature sensors

littlerich

I found an LM35 sensor and looking at the data sheet it indicated that it can in some instances have the output wire connected straight into a microcontroller.

I think I have the wrong end of the stick though.

Have a BS2P40.

Am I correct in thinking I must use and ADC or is there a way to grab the 10mv/deg on an input pin and convert??

Sorry this is sounding like a pretty lame question but have trolled all the pdf's I can find and think I have wasted a whole lot of time.

Cheers
Rich

Mike Green

There's some discussion here (www.emesystems.com/BS2rct.htm) on using a couple of I/O pins to do an ADC.

littlerich

Thank you Mike