From another forum:
I remember seeing a design that changed current to voltage using discrete parts, then read that using a PIC.Microchip has several application guides on their website regarding using the ADC; you should read them.
Have a look at AN513 and ADN007 for some ideas.
Can't remember where I saw that.
Robert
Edit: http://www.electronics-lab.com/proje...008/index.html
0-33V, 0-3A.
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