Use an Output device
As an output device i decided to use a little speaker to create vibrating sounds.
I used the same board as in the last assignment with the Input device. After connecteing the speaker i wrote the following code that plays the tone.
int i = 0; //int for analog value
bool up = true; //bool as switch
void setup() {
pinMode(A3, OUTPUT); //speaker pin as output
}
void loop() {
if(up){
i++; //raise the value
}else{
i--; //lower the value
}
if(i >= 255){
up = false; //flip switch if value is too high
}
if(i <=0){
up = true; //flip switch if value is too low
}
analogWrite(A3, i); //write value to speaker pin
}
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