Quote Originally Posted by mackrackit View Post
Maybe this will help?
http://www.picbasic.co.uk/forum/show...16&postcount=2
Mack, That does help allot thank you. I am an amateur at best and not a good one, but I try. I am starting to understand the math. I do read the datasheets, I don't always understand them but I read them and try none the less. The part I am having difficulty is with the settings of ADCON0 and ADCON1 and setting of VREF. I am getting readings and it seems that proportinatly it goes up as the PSI goes up. I've incorporated your suggested math into my program thanks. The problem I think I am having is the VREF is and one or more of the bits I have set in ADCON? is not correct. At a dead stop with 0 psi I get a reading and that most likely is proportinate to the
.47 vdc the voltmeter is telling me the sensor is putting out and being presented to RA0. Ok now the dumb questions: Do I need to actually present a +V and -V on RA3 and RA2 or as I understand it setting ADCON1.0 through .3 to 0000 sets it up to use the Vdd and Vss the pic is using itself?
I thought the range would be 0 to 1024 not 0 to 256 why did I think that?
I thank you for your help.
David