Uzizwe - Colour Ring

/*  Uzizwe Colour-Ring demo sketch
 *   
 * Any help you offer will be much appricated. 
 * The dream is to get these working really effectlivly and get them to underprivileged kids.  
 * Thank you.
 * 
 * Allows a visually impaired person to understand if an object is red,green or blue in colour. 
 * The vibrations will vary with pulse once if red, twice if green and three times if blue.
 * 
 * 
 * This sketch was adapted from both the original that comes with the 
 * Adafruit library and form Arduino Step by Step by Peter Dalmaris.
 * Thank you Peter 
 * 
 * 
  * Components
 * ----------
 *  - Nerdonic Exen Mini or equivelant, Arduino Mini, Adafruit Trinket 
 *  - Adafruit RGB TCS34725 sensor breakout or equivelant
 *  - Vibration Motor 10x2mm 3V
 *  - One 2  KOhm resistors
 *  - One BS170 MOSFET
 *  
 *  Libraries
 *  ---------
 *  - Wire
 *  - Adafruit_TCS34725
 *
 * Connections
 * -----------
 *  Break out    |    Exen Mini
 *  -----------------------------
 *      VIN      |      3.3v
 *      GND      |      GND
 *      SCL      |      SCL or A5
 *      SDA      |      SDA or A4
 *      LED      |      8 (or set to GND to turn off)
 *      INT      |      2 (but not used in this sketch)
 *   
 *   
 *  Assembly
 *  --------
 * The Exen Mini is not able to direcly power the 3V Vibration Motor. 
 * So we used a BS170 MOSFET connected to the batter and the 3V Vibration Motor. Controled by the Pin 0 on the Exen Mini.
 * The vibratory motor is a Small DC motor with a eccentric rotating mass (ERM).  
 * We would be better off using a A linear resonant actuator (LRA) but they need an additional motor driver. 
 *  
 *  Links
 *  -----------------
 *  Check out any course by Peter Dalmaris at https://www.udemy.com/user/peterdalmaris/
 *  For information on RGB color: https://en.wikipedia.org/wiki/RGB_color_model
 *  For information on color temperature: https://en.wikipedia.org/wiki/Color_temperature
 *  For more information on the breakout see https://www.adafruit.com/product/1334
 *  The repository for the library used is at https://github.com/adafruit/Adafruit_TCS34725
 *  For the Exen Mini https://www.nerdonic.com/
 *  For more information about Vibratory Motors look at https://www.precisionmicrodrives.com/vibration-motors/
 *  You can find us at www.uzizwe.com 
 * 
 */

#include <Wire.h>
#include "Adafruit_TCS34725.h" 
Adafruit_TCS34725 tcs = Adafruit_TCS34725(TCS34725_INTEGRATIONTIME_50MS, TCS34725_GAIN_1X);  



void setup() {
  SerialUSB.begin(115200);
  
  if (tcs.begin()){
    SerialUSB.println("Found Adafruit_TCS34725");
  }else {
    SerialUSB.println("No Adafruit_TCS34725 Found ... check connections");
    while (1); // this completely stops the program
  }

  pinMode(8, OUTPUT); //LED
  pinMode(A1, OUTPUT); //MOTOR
  pinMode(A2, OUTPUT); // switch colour sensor LED on 
  
  analogWrite(8, 0);
  analogWrite(A1, 0);
  digitalWrite(A2, HIGH);
  
}

void loop() {
   uint16_t r, g, b, c;
   tcs.getRawData(&r, &g, &b, &c);
   
  SerialUSB.print("C:\t"); SerialUSB.print(c);
  SerialUSB.print("\tR:\t"); SerialUSB.print(r);
  SerialUSB.print("\tG:\t"); SerialUSB.print(g);
  SerialUSB.print("\tB:\t"); SerialUSB.println(b);
  
  if((r>g) && (r>b)){
     SerialUSB.println("red");
     redVibration();
  }
  
  if((g>r) && (g>b)){
     SerialUSB.println("green");
     greenVibration();
  }
  
  if((b>r) && (b>g)){
     SerialUSB.println("blue");
     blueVibration();
  }
  
  delay(2000);
}


void redVibration(){
  on();
  off();
}


void greenVibration(){
  on();
  off();
  on();
  off();
}


void blueVibration(){
  on();
  off();
  on();
  off();
  on();
  off();
}

void on (){
  int rpm = 255;
  analogWrite(A1,rpm);
  analogWrite(8, rpm);
  delay (120);
}

void off(){
  int rpm = 0;
  analogWrite(A1,rpm);
  analogWrite(8, rpm);
  delay (120);
}