10bits adc using 16f877

[sixty9sandals]

i've check it..but the regulator input is 4.8V..is there posibbly coz by my wrong ADCON1 register?..

thank you

[mister_e]

Regulator INput or OUTput?

if it's output, the results make sense. use the previous calc i did.

If it's INput... and if it's a simple 7805... the output signal will be pretty bad

[Sean_Goddard]

If you have a noise problem, try setting the settling time on the ADC to a few microseconds, then initiating a conversion. At the same time, make the PIC SLEEP for around the same length of time as the conversion. This should SIGNIFICANTLY reduce the noise across the PIC silicon substrate and give you a lot better accuracy.