I've used the 8 channels from a '877 to measure 8 different pressures
with no problem in the multiplexation.


BRGS

Mauricio D. Jancic
Janso Desarrollos - Microchip Consultant
www.janso.com.ar
info@janso.com.ar
(54) - 11 - 4542 - 3519
Lugones 3238 "B" - C1430ECN
Capital Federal
Republica Argentina
(54) - 11 - 4542 - 3519
MSN: jansodesarrollos@hotmail.com

>>-----Original Message-----
>>From: pic microcontroller discussion list
>>[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Olin Lathrop
>>Sent: Viernes, 21 de Noviembre de 2003 16:13
>>To: PICLIST@MITVMA.MIT.EDU
>>Subject: Re: [EE:] Multi Channel VU-meter w pic
>>
>>
>>Alessandro Queri wrote:
>>> I'm wondering if someone of you did work on a multi-input ADC using
>>> pic's integrated AD. I'd like to make a 4 channel vu-meter using
>>> something like a 16f876, but I'm afraid about the ADC getting
>>> multiplexed. In fact I guess the channels could interfere one to
>>> another. I am also illiterate on the agument: do I have to read the
>>> RMS data or just plain voltage on pin? Any suggesion is welcome.
>>
>>I'm assuming by "vu-meter" you mean you want to know the
>>rough volume level of an audio signal smoothed out over a few
>>100 milliseconds or so.
>>
>>Low pass filter the output of a peak detector.
>>
>>
>>*****************************************************************
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>>(978) 742-9014, http://www.embedinc.com
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