You should try using a piezo element instead of speaker (and maybe even
leave out the cap).  You should get loud sound out of that.

Just a thought

John Mullan

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Mike M
Sent: Tuesday, December 07, 1999 11:01 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Making Sound!


Hey i been trying to create sound with a Pic and a speaker.  Just using
simple statements like

BSF PORTB, 3
;;;delay 1ms
call delay
BCF PORTB, 3

well it works, but really really low sound.  I expected that.  The speaker
is 8ohm, one lead to ground, and the other lead to a 22uf cap wit the pos
side to the PIC pin 3.  Now i got the basic idea from Dontronics pic source
book.  Wich is almost taken right out of the BASIC STAMP 1 manual except for
the actual code :).   I would assume this setup on a stamp would also
produce very low sound without some sort of amplifier or am i wrong? if so,
why?

Mike

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