outputing audio waves

Projects Programming
1

I am trying to make a project where i press a button and then the arduino recognizes the button press and sends an audio wave through an aux cord and into a phone or computer so that the computer can recognize the audio wave and I could then use it to do something. I want to be able to do this for two buttons. I know how to have the arduino tell the difference between the two buttons but i do not know how to output an audio wave. Any information on how to do this and what, if any, parts i will need.

here is my code for the 2 buttons

void setup() {
Serial.begin(9600);
//configure pin2 and pin3 as an input and enable the internal pull-up resistor
pinMode(2, INPUT_PULLUP);
pinMode(3, INPUT_PULLUP);
pinMode(13, OUTPUT);
}

void loop() {
int sensorVal1 = digitalRead(2);
int sensorVal2 = digitalRead(3);
if (sensorVal1 == LOW) {
Serial.print("Btn1 down :"); Serial.print("Sensor1 value = ");
Serial.println(sensorVal1);
//code that will output the soundwave for button 1
}
if (sensorVal2 == LOW) {
Serial.print("Btn2 down :"); Serial.print("Sensor2 value = ");
Serial.println(sensorVal2);
//code that will output the soundwave for button 2
}
}

3

Thank you, i read that and understand the tone function but now im confused as to how i would set up the circuit, what could i use to plug into the arduino and then have it connnect to an aud cord that could send the wave into a computer?

4

ztg5:
Thank you, i read that and understand the tone function but now im confused as to how i would set up the circuit, what could i use to plug into the arduino and then have it connnect to an aud cord that could send the wave into a computer?

Study the tone tutorial and schematic: https://www.arduino.cc/en/Tutorial/toneMultiple

Pick one speaker to use and eliminate the other two and the code that drives them. Connect your cord to where the speaker is shown connected, and the shield on the cord to the Arduino ground pin. Be sure to keep the resistor in case you have a short using the cord.

Paul