title: Using Raspberry Pi to produce 'beep' through piezo transducer
body: <p>I'd like to use my Raspberry Pi to produce a brief, high-pitched (and preferably loud) 'beep' through a piezo transducer.</p>
  
  <p>I tried connecting the + of the transducer to a GPIO pin (and the -ve to GND), and making the pin go high briefly. This worked, but it's more of a very quiet click rather than a loud beep.</p>
  
  <p>Does anyone know how to produce a beep?</p>
  
  <p>Thanks!</p>