Hello,

How would one have two 16F84 pics share a single piezo speaker on their PORTA.1 pins?

At the moment I have a couple on a test breadboard their PORTA.1 pins connected to a single 10uF/16V electro cap and on to a (I hope) piezo speaker. I scavenged the speaker from an old UNIDEN cordless phone and it won't work without the capacitor. All the PORTB pins are connected to two banks of LEDS that light back and forth and beep when they reach either end. It's only point is to teach me how to do this.

If only one PIC is connected then everything works fine - startup beep and the beeps at either end but with two PICs there's only one startup beep then little clicks from the speaker.

Sorry but I don't have the current code to post - it's on an ancient computer in the garage with a faulty floppy, yes floppy drive. I must replace that sometime.

Any help greatly appreciated.

Rubicon.