Wave Generator

Ideation

As a science teacher, demonstrating the connection between a frequency we hear and the resulting waveform is essential.

Introduction

This project builds a simple circuit using a Nano to manipulate sound in a controlled fashion. This code simply keeps the frequency changing repeatedly.

Connections

• Pin 9 connects to the input on the audio amplifier.

• Audio amplifier output goes to positive side of speaker.

• Audio amplifier connects to breadboard for its power and ground inputs.

• The adjustable power supply I used was set to 12v.

• Connect the power supply leads to the step down voltage regulator.

• From the voltage regulator output (pos), connect to breadboard positive line.

• From the voltage regulator output (neg) connect to breadboard negative line.

• Connect a 470 ohm resister from the positive on breadboard to the Arduino 5V.

Summary

I think the connections sum it up. Hopefully, this helps someone out there!