What kind of buzzer? Part #?
Alan KM6VV
the buzzer doesn’t have any series number or part number… actually i feel weird that why the pin P9 keep HIGH which cause my buzzer keep beeping… i wondering why my PIN P9 keep HIGH… thanks…
(using coding from aka Xan)
Just a thought, there are different kinds of “beepers” or transducers. Maybe yours makes continuous sound with a hi on the input to the transistor.
I don’t remember, but I’ll bet the transducer on the BB2 is “driven” by a square wave generated on P9.
Any numbers on your buzzer? Any + or - signs? If you find the signs, I’d try applying 5V or so directly to the buzzer, I’m thinking you’ll get a sound!
Edit:
Looks like the BB2 uses a KC-1206, and it has + - signs on it too. So that may not help.
Alan KM6VV
You never posted any code. If you don’t make pin 9 low it can float high causing your beeper to beep. We use a speaker on the Bot Board and you can feed it waveforms and here the sounds. You apparently are using a device that generates a tone when a DV voltage is applied.
i had edit my post cos got some changes…
im using the code form link (lynxmotion.com/images/html/build159.htm)
for the code… if im not mistaken… it will LOW on pin9 if i press nothing right?? and will HIGH only for few second if certain button is pressed… but why mine keep HIGH on pin 9 while im using the same coding?? and work properly if i attach to the BAP28 to the bot-boardII(thanks Lynxmotion)
In Phoenix code, I didn’t see any “high P9” statements, only
“sound P9,[100\4000, 100\4500, 100\5000]”
Which is what I would expect.
Try a simple program, with just the high and low commands, see what you get.
I doubt if P9 level is defined until after you play a sound. And then it might be just where ever it was left.
If you get simple sound on/off control with just hi and low commands then you’ve got a buzzer, not a transducer (speaker) element.
Alan KM6VV
i’d tried a simple simple high low sound command …
everything goes fine… the pin9 work accurately as programmed…
please help… thanks…
Not sure what you mean. I’m talking about the high and low commands, like
high PS2SEL
that you see in the code.
The sound command works?
sound P9,[100\4000, 100\4500, 100\5000]
There is no simple high low sound command.
do:
[code] high P9
pause 1000
low P9
[/code]
something like that.
What is pin9 accurately doing for you now?
Alan KM6VV
first of all… sorry for my broken english that make u confuse… 
i mean i had try something like
Sound P9,[60\4000,80\4500,100\5000]
pause 2500
Sound P9,[100\5000,80\4500,60\4000]
pause 2500
Sound P9,[60\4000,80\4500,100\5000]
pause 2500
Sound P9,[100\5000,80\4500,60\4000]
pause 2500
Sound P9,[60\4000,80\4500,100\5000]
pause 2500
Sound P9,[100\5000,80\4500,60\4000]during pause command… the voltage at pin 9 is 0V for duration 2.5second
thats the LOW condition i mean
and the HIGH condition is there got output voltage (square wave with any amplitude any frequency)
thats the HIGH condition i mean
its easier to represent it with LOW and HIGH 
sorry
thanks please help
When do you get a high? It’s strictly where ever the pin is left, as far as I know.
You’ve got a series of three notes, separated by pauses. What do you hear?
Did you ever try what I suggested?
Alan KM6VV
first of all…really thanks for keep helping me… i appreciate it…
and sorry… because actually i face some difficulty to understand your sentence… maybe because of my broken English language… my english not so good… and furthermore u got an abstruse language… so maybe u can just use simple english to me… haha… 
okok… I’d tried the code
high P9
pause 1000
low P9
for my BAP carrier… the buzzer will beeping(5V pin9) when applied power and then become LOW(0v pin9) for the rest… thats all…
so… ???
Try putting 5vdc and ground across the speaker / buzzer. (out of circuit)
If it goes click! then its a speaker.
If it goes beeeeeep! it’s a buzzer.
A speaker will make tones like different frequency, like a phones keys, when a wave is sent to it. .
A buzzer will only make the same buzzing sound when dv voltage is applied.
This is what they are trying to understand.
ya… i tried it… it goes beep… so it is a buzzer right?? so what u trying to tel me??? im a bit blurr… sorry…
oh ya… bout the bot-board II is using speaker or buzzer actually???
Well this helps us understand your problem descriptions much better. You are never hearing beeps from the PROGRAM, cause your transducer makes it’s own sound. To fix the problem you must take out the buzzer and put in a speaker. Then the constant sound will stop. There is nothing wrong with the program, just your HARDWARE. Ok, problem solved… next! lol
i need to wait for couple of hours only i can get a speaker… so for now(temporary)… how should i modify my circuit for using my buzzer??? cos i still wanna try using this(same) buzzer…
and actually im so confused… LOL… but i will try figure it out later…
one more question is… that means the Bot Board II is using speaker is it??? is it speaker and buzzer have the same shape same looking?? what is transducer(speaker or buzzer or other else) refer to actually??? if Bot board using buzzer also… then why it can function well but not mine???
Else. I think a transducer needs PWM supplied to it to make it go Bzzzzzzzzzzt. A buzzer probably has the PWM built in so only voltage is needed to make it go Bzzzzzzzt.
Yes the Bot board II is using a speaker.
I can’t tell you how to make it work… It’s the wrong part!
Yup, you’ve got buzzer, not the same as the speaker (transducer) that’s on the BB2.
You should simply turn your buzzer on for different lengths of time
high P9
delay(1000)
low P9
delay(500)
high P9
delay(500)
low P9
Don’t use the sound command with a buzzer, It just confuses me.
HTH
Alan KM6VV
finally the problem solved… 
thanks for u all guys…
i should cal u all guru…
thanks again… all my gurussssss… haha
to : Jim Frye
i just think of something suddenly…
i shouldn’t asked much on the buzzer/carrier BAP-28
sorry Jim…
but… im new to electronic and im just truly curious on everything… just for academic perspective…
just wanna learn… just for academic perspective…
No offense intended Jim… sorry…
i had bought BBII… but i still wanna learn… just for academic perspective… i mean i care for knowledge…
i don’t know how to express my words (poor English language)… but i assume u understand my words…