Components list
Please see the circuit diagram (bottom)
- Arduino Uno
- 5v DC source (batteries & stuff)
- Breadboards for testing & veroboard for final
- Wires, lots and lots of wires
- Speaker
- Microphone (100Hz to 16kHz)
- R1: 15k ohms
- R2: 47k ohms
- R3: 1k ohms
- R4: 4.7k ohms
- R5: 4.7k ohms
- R6: 2.2k ohms
- R7: 1k ohms
- R8: 4.7k ohms
- R9: 4.7k ohms
- R10: 100k ohms
- c1: 100nF
- c2: 100nF
- lm741 (x2)
- lm339 (x1)
