Thanks for the Help.

So, I got the op amp all set up to keep the voltage under five volts. I can't believe I let that slip my mind when I was setting this up.

Now, for coding, to get the analog output of the sensor to a use-able number in the pic. I understand that the pic has to have the AD conversion turned on.

So, I want to hook up the analog voltage input on to pin RA7 on a 16f88. Would this be the correct code to do that

'Set up AD conversion
TRISA = %10000000 'sets RA7 as input and the rest as outputs
ADCON1.7 = 1 'Right justify for 10-bit results
Pause 500 'Wait .5 seconds for warm up
But then, I'm stumped on getting the digital value from that pin to a value to plug into the equations for velocity.

I'm sorry I'm so slow at this. I'll end up in the lab at 6AM tomorrow working on this so I want to make so I have as much information as possible to get as much done as I can.

-Marcus