This fun project uses a 555 timer in astable mode and an LDR to create sound that changes with light. As the light intensity changes, the LDR’s resistance varies, altering the output frequency and producing different tones. It’s a simple and cool way to explore how resistance affects a 555 timer’s frequency!
Components
- 1k Resister
- 100k Resister
- 330Ω Resister
- 555 Timer IC
- 100nF Capacitor
- 0.1uF Capacitor
- LDR Sensor
- Small Speaker
Circuit Diagram
