What you’ll need:

• Digilent Analog Discovery (DAD)
  • USB-A to Micro-USB included in DAD box
  • Jumper cluster included in DAD
• 2-prong buzzer
• Male-male jumper cable (x2)
• Breadboard
• Rasperry Pi + monitor/keyboard/mouse set up at electronics bench

Buzzer-located in audio drawer’s buzzer bag

Set Up

The DAD has 30 channels that act as power supply, wave generators, grounds, oscilloscopes and more! You can either attach jumpers individually as needed, or use the large block included in the Giligent. For the voltage supply tutorial you’ll use the first ground and W1 (waveform generator 1) pictured below.

1. Connect the jumper cluster to the DAD as shown above. If there isn’t a cluster in your DAD box, you can just use individual jumpers for ground and W1.
2. Connect male-male jumpers to ground and W1.
3. Construct the following circuit on your breadboard:

Where the green jumper is W1 and the white is ground. Since we’ll be using a sinusoidal wave the polarity of the buzzer doesn’t matter, but it’s good practice to connect W1 to the + side and ground to the - pin of the buzzer.

3.5 Alternatively, you could just skip the male-male jumpers and plug the buzzer directly into W1 and ground:

1. Next plug the DAD into your Raspberry Pi with the USB-A to Micro-USB cable present in the DAD case.

2. Find and open the WaveForms app on the Raspberry Pi. DAD2 should be selected and connected automatically, but you might need to choose Digilent Analog Discovery 2 from a drop down menu.

Hearing test

There are a few ways to generate a wave on the DAD. We’ll experiment with two!

1. From the Welcome page, open the Wavegen: