AVR-Chat

On Thu, 26 May 2005 00:32:46 -0000 you wrote:

>I have a radioshack piezo buzzer that is rated for 3-16 volts and a 3 
>or 5 MA.  I tested the current it draws with my dmm and I got the 
>rated MA being drawn.
>
>I had used this device on a different project using a BX-24 which has 
>an 8515 as its core.
>
>When I use it with my 128, the sound is very faint.  I tried it on 2 
>different pins and the sound was the same.
>
>I am pretty new to AVRs.  I am pretty sure that I have the pin set to 
>output (DDRx = 1 on the appropriate pin).
>
>Any suggestions?

Connect it between 2 output pins and switch them alternately. That effectively
doubles the voltage.
--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
FZAOINT http://www.fzaoint.net