Originally Posted by Gimpy
I did my own mod using a PNP darlington (MPSA63), a 1K resistor, a 1uF capacitor and a buzzer.
This circuit is easier and works like a charm!
The buzzer I used is a SBT-12 https://www.westfloridacomponents.co...+SBT-1212.html
but any buzzer 5V to 12V with any frequency should work.
The peak generated by Gary is so tiny that it has to be stretched by the cap and a transistor with a large Beta or else, you can't hear it.
Result really sound like a floppy!
I'm no electronics hobbyist but can solder things where they need to go. Do you have a photo of how you've connected so I can understand the points you've used? Thanks.