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SonicScrewdriver.ino
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SonicScrewdriver.ino
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byte piezoPin = 9; // pin for piezo. Long leg of piezo: pin 4, short leg: GND.
byte buttonPin = 10; // pin for momentary switch (between Pin 10 and GND).
int sensorPin = A0;
const int RED_PIN = 8;
const int GREEN_PIN = 7;
const int BLUE_PIN = 6;
int sensorValue;
void setup()
{
pinMode(piezoPin, OUTPUT);
pinMode(buttonPin, INPUT_PULLUP); // set up buttonPin as input with internal pull-up resistor
}
void loop()
{
sensorValue = analogRead(sensorPin);
soundFX(800.0, 30 * (sensorValue / 5));
}
void soundFX(float amplitude, float period) {
int uDelay = 2 + amplitude + amplitude * sin(millis() / period);
for (int i = 0; i < 5; i++) {
digitalWrite(piezoPin, HIGH);
RGB(uDelay);
delayMicroseconds(uDelay);
digitalWrite(piezoPin, LOW);
delayMicroseconds(uDelay);
}
}
void RGB(int color)
{
int redIntensity;
int greenIntensity;
int blueIntensity;
color = constrain(color, 0, 767); // constrain the input value to a range of values from 0 to 767
// if statement breaks down the "color" into three ranges:
if (color <= 255) // RANGE 1 (0 - 255) - red to green
{
redIntensity = 255 - color; // red goes from on to off
greenIntensity = color; // green goes from off to on
blueIntensity = 0; // blue is always off
}
else if (color <= 511) // RANGE 2 (256 - 511) - green to blue
{
redIntensity = 0; // red is always off
greenIntensity = 511 - color; // green on to off
blueIntensity = color - 256; // blue off to on
}
else // RANGE 3 ( >= 512)- blue to red
{
redIntensity = color - 512; // red off to on
greenIntensity = 0; // green is always off
blueIntensity = 767 - color; // blue on to off
}
// "send" intensity values to the Red, Green, Blue Pins using analogWrite()
analogWrite(RED_PIN, redIntensity);
analogWrite(GREEN_PIN, greenIntensity);
analogWrite(BLUE_PIN, blueIntensity);
}