Measuring Volts and Amps digitally

[dhouston]

Im still confused though. How does that relate to amps? Or is it that 0-1024 is equivelent to 0-5A?

The PIC's ADC channels can be configured as 10-bit or 8-bit and there are different reference voltages that you can use. I was assuming you would use 10-bits and Vref=5.

5/1024=0.004882812 or ~4.88mV per bit.

The datasheet for the Allegromicro ACS712 chip says it's range is +/-5A and its sensitivity is 185mV per amp. At 0A, its voltage output is Vcc/2 (it is bidirectional, after all). For AC measurements using Vcc=5V, at 600mA, it would output 2.389-2.611V and at 1A, it would output 2.315-2.685V.

What else do you need to know?