Materials:
| Item | Quantity | Price |
|---|---|---|
| Speaker Amplifier | 1 | $4.89 |
| Speaker Driver | 1 | $2.95 |
| Slinky | 1 | $12 |
| Tube | 1 | $16.85 |
| Piezo Sensor | 1 | $9.88 |
| Audio jack | 1 | $19.97 |
| Foam board | Enough to cut 3 circles slightly larger than the tube opening | $6.82 |
Tools:
- Soldering set up (including iron, solder, and wires)
- Hot glue gun
Powerpoint with instructions available here