diode 5 is an LED. R8 is the speaker. R11 is wired to RB7 of the PIC. we have the code working to trigger the siren. all i need now...

is there a siren/speaker i can use with an amplifier already installed in it?

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hey, guys. i've just built a siren for a project i'm doing and i'm kinda stuck.basically what i've done is use 1 monostable 555 to control the output of the...