Sound
Circuit Diagram
Background
Because the sound is a simple square wave, a single transistor is suitable for amplification. The potentiometer controls the volume.
Components
| Component | Description | Image |
|---|---|---|
| Speaker | 8 Ohm 200 mW speaker |  |
| Potentiometer |  |
|
| P2N2222A | Transistor |  |
| 220 Ohm Resistor |  |