I got one of these switch 2808 modules in order to get a latching output from a piezo switch. The piezo switch provides a brief short which is just enough to trigger the module. I would now like to introduce acoustic feedback so that when the piezo switch is touched, I get a short beep. The brief short provided by the piezo is probably fine duration wise so I was thinking, is it possible to hook up the base of an PNP transistor to one side of the piezo switch (need to find out which) and hook up a small active piezo buzzer to the emitter side of the transistor? I guess the same principle applies to insert a led, in series with the buzzer to have visual and acoustic feedback.
Do I insert a resistor or diode in series with the base?
Many thanks for your help.