simple buzzer

[aruna1]

hey guys can you tell me how to make a very simple buzzer so there will be a beep each time my 12F675 increment count by one and high its A1 pin? i need very small(i don't have too much space so NE555 is not going to fit ) and very simple circuit.simple and single "beep" is enough.

i have following code part in it

output_high(PIN_A1);
delay_ms(100);
output_low(PIN_A1);

what i want is to hear a beep when this code part run.

and i have this motherboard speaker. can i use it for this?

thanks

[SmAsH]

well, if its just a small piezo... it will work fine.
have you got the datasheet for it?

[aruna1]

well i couldnt find any datasheet for it.
but i found some info in here
http://www.central-stock.com/InventoryCatalog/part-HCM1206.htm

anyway can someone suggest a circuit?

[Joker94]

if an NE555 timer chip wont fit i don't know what you are going to do. Most likley the next step down is a micro ic which is really really hard to work with but it is really small so it will fit.

Have a look on the texas instruments web site

[SmAsH]

i couldn't get any info from that link does it require a certain pulse to go off, or just current applied to its poles?
if it doesn't draw too much current you could hook it up to an I/O pin directly...
and if it requires a certain pulse, you could probably use a pwm pin...

[aruna1]

well i just made one.i'll post schematic here in a moment

[aruna1]

here it is.tested and working fine.

[Joker94]

if you want the easy way to get a timer you can get MCUs that have them in built, and it dose not use up any space

[aruna1]

well i have used all the pins(12F675)

[SmAsH]

so how did you expect to control the buzzer?
would you have it connected to the A1 pin?

[aruna1]

i can power up the circuit through a transistor (i can use my count output pin)