Edson You need calibrate the A/D and eliminated any source of external noise, if you take a read whit volmeter conect this affect the reading of your PIC. Too, can you make whit software a filter for the input of your A/D Francisco Edson Brusque wrote: > > Hello, > > I'm making a voltage reader with the internal A/D from a PIC16F877. > While my voltmeter shows that my input have steady 1.18V, PIC's A/D gives me > random values from 240 to 247. Is this normal? Is there a way to make the > A/D shows a steady reading? > > Best regards, > > Brusque > > +------------------------+ > | Edson Brusque | > | Research & Development | > | www.citronics.com.br | > +------------------------+ Content-Type: text/x-vcard; charset=us-ascii; name="briones.vcf" Content-Transfer-Encoding: 7bit Content-Description: Card for Francisco Armenta Content-Disposition: attachment; filename="briones.vcf" Attachment converted: wonderland:briones.vcf (TEXT/CSOm) (000175F3)