For this assignment, I created a diffuser using my LEGO Ghostbusters Car. I wrapped the 3 LED’s within a semi-transparent paper packet and placed the wrapped LED’s within the main section of the car which was surrounded LEGO glass pieces.
I set up the commands as weapon modes of the Ghostbuster Car, in case ghosts were to attack. Each attack had a different effect through the LED.
The three weapon modes were:
ProtonGun – Emitted radiating pulses of Red, Green and Blue light
IonCannon – Alternates between Violet and Yellow
NeutronaGun – The interior of the car becomes Orange
Components:
- Arduino Uno
- Breadboard
- 3 LEDs (rgb)
- 3 220Ω Resistors
- jumper wires
- USB cable
- laptop
/*
* Ghostbusters
* ---------------
* Serial commands control the brightness of R,G,B LEDs
*
* Command structure is "<WeaponMode>", where "WeaponMode" is
* one of "ProtonGun","IonCannon",or "NeutronaWand"
* E.g. "ProtonGun" Emitted radiating pulses of Red, Green and Blue light
* "IonCannon" Alternates between Violet and Yellow
* "NeutronaWand" The interior of the car becomes Orange
*
* Created 11 September 2016
*/
String weaponmode;
char serInString[200]; // array that will hold the different bytes of the string. 100=100characters;
// -> you must state how long the array will be else it won't work properly
char weaponcolor;
int colorVal;
int wait = 5;
int j = 0;
// Program variables
int redVal = 255; // Variables to store the values to send to the pins
int greenVal = 1; // Initial values are Red full, Green and Blue off
int blueVal = 1;
int redPin = 11; // Red LED, connected to digital pin 9
int greenPin = 10; // Green LED, connected to digital pin 10
int bluePin = 9; // Blue LED, connected to digital pin 11
void setup() {
pinMode(redPin, OUTPUT); // sets the pins as output
pinMode(greenPin, OUTPUT);
pinMode(bluePin, OUTPUT);
Serial.begin(9600);
analogWrite(redPin, 0); // set them all to mid brightness
analogWrite(greenPin, 127); // set them all to mid brightness
analogWrite(bluePin, 0); // set them all to mid brightness
Serial.println("Ghosts are coming !! Choose your weapon mode:");
}
void loop () {
// clear the string
memset(serInString, 0, 200);
readSerialString(serInString);
//read the serial port and create a string out of what you read
weaponmode = String(serInString);
weaponcolor = serInString[0];
Serial.println(weaponmode);
if( weaponcolor == 'p' || weaponcolor == 'i' || weaponcolor == 'n')
{
if(weaponcolor == 'p')
{
for(int i=0; i<=5; i++)
{
analogWrite(redPin, 255);
analogWrite(greenPin, 0);
analogWrite(bluePin, 0);
delay(200);
analogWrite(redPin, 0);
analogWrite(greenPin, 255);
analogWrite(bluePin, 0);
delay(200);
analogWrite(redPin, 0);
analogWrite(greenPin, 0);
analogWrite(bluePin, 255);
delay(200);
}
}
else if(weaponcolor == 'i')
{
for(int i =0; i<=10; i++)
{
analogWrite(redPin, 153);
analogWrite(greenPin, 51);
analogWrite(bluePin, 255);
delay(500);
analogWrite(redPin, 255);
analogWrite(greenPin, 255);
analogWrite(bluePin, 0);
delay(500);
}
}
else if(weaponcolor == 'n')
{
analogWrite(redPin, 255);
analogWrite(greenPin, 128);
analogWrite(bluePin, 0);
}
}
delay(100); // wait a bit, for serial data
}
//read a string from the serial and store it in an array
//you must supply the array variable
void readSerialString (char *strArray) {
int i = 0;
if(!Serial.available()) {
return;
}
while (Serial.available()) {
strArray[i] = Serial.read();
i++;
}
}
