Phototransistor : reading

// Using an ATTiny44
#include <SoftwareSerial.h>
SoftwareSerial mySerial = SoftwareSerial (1,0);    // RX PA1 12, TX PA0 13

// Pin Configurations
const int SENSOR = A2;          // PA2
const int LED = A7;             // PA7
int sensorValue = 0;  // variable to store the value coming from the sensor


void setup() {
// declare the LED as an OUTPUT:
pinMode(LED, OUTPUT);
mySerial.begin(115200);
mySerial.println("I am here to serve.");
}

void loop() {                   // read the value from the sensor every 500 ms
sensorValue = analogRead(SENSOR);
mySerial.println(sensorValue);
digitalWrite(LED, HIGH);      // Blink LED for visualizing sensor timing
delay(250);
digitalWrite(LED, LOW);
delay(250);
}

// Using an ATTiny44
#include <SoftwareSerial.h>
SoftwareSerial mySerial(0,1);     // RX PA1 12, TX PA0 13 (flipped)

void setup() {
mySerial.begin(19200);          // start serial feed, set the baud rate
}

void loop() {                     // print hello every 250ms
mySerial.println("hello");
delay(250);
}

#include <SoftwareSerial.h>
SoftwareSerial mySerial(0,1);         // RX PA1 12, TX PA0 13 (flipped)

// Using an ATTiny44
// Pin Configurations
const int sensorPin = A2;             // PA2 11 ADC2
const int LED = A7;                   // PA7 6
int sensorValue = 0;                  // variable to store the value coming from the sensor
int outputValue = 0;                  // variable to store the PWM


void setup() {
pinMode(LED, OUTPUT);               // declare the LED as an OUTPUT:
mySerial.begin(19200);              // I set this to 19200 and arduino monitor to 2400
mySerial.println("Hello");
}

void loop() {
sensorValue = analogRead(sensorPin);// read Phototransistor write to variable
outputValue = map(sensorValue, 0, 1023, 0, 100);  // convert to a percentage
mySerial.print("sensor ");
mySerial.print(sensorValue);        // send reading to serial
mySerial.print("...output ");
mySerial.println(outputValue);      // send percentage to serial
digitalWrite(LED, HIGH);            // visually confirm read timing
delay(125);                         // pause between readings (not too fast for stability)
digitalWrite(LED, LOW);
delay(125);
}

#include <SoftwareSerial.h>
SoftwareSerial mySerial(0,1);         // RX PA1 12, TX PA0 13 (flipped)

// Using an ATTiny44
// Pin Configurations
const int sensorPin = A2;             // PA2 11 ADC2
const int LED = A7;                   // PA7 6
const int timer = 125;
int sensorValue = 0;                  // variable to store the value coming from the sensor
int outputValue = 0;                  // variable to store the PWM
int lightMax = 1023;                  // variable to calibrate percentage
int countdown = 0;

void setup() {
pinMode(LED, OUTPUT);               // declare the LED as an OUTPUT:
mySerial.begin(19200);              // I set this to 19200 and arduino monitor to 2400
delay(1250);                        // delay 20 seconds to connect phototransistor
while(countdown < 5) {              // flashing light last ten seconds before start
countdown++;
digitalWrite(LED, HIGH);
delay(125);
digitalWrite(LED, LOW);
delay(125);
}
mySerial.println("Hi");
}

void loop() {
int sensorValue = analogRead(sensorPin);// read Phototransistor write to variable
if (sensorValue >= lightMax) {
int outputValue = map(sensorValue, lightMax, 1023, 100, 0);
mySerial.print(sensorValue);        // send reading to serial
mySerial.print(".....");
mySerial.println(outputValue);      // send percentage to serial
delay(timer);                       // pause between readings (not too fast for stability)
} else {                              // calibrate percentage
mySerial.print(sensorValue);
mySerial.println(" XXX");
lightMax = sensorValue;
digitalWrite(LED, HIGH);             // visually confirm calibration
delay(timer*2);
digitalWrite(LED, LOW);
}
}

#include <SoftwareSerial.h>
SoftwareSerial mySerial(0,1);         // RX PA1 12, TX PA0 13 (flipped)

// Using an ATTiny44
// Pin Configurations
const int switchPin = A3;             // PA3 10 ADC3
const int sensorPin = A2;             // PA2 11 ADC2
const int LED = A7;                   // PA7 6
const int timer = 125;
int sensorValue = 0;                  // variable to store the value coming from the sensor
int outputValue = 0;                  // variable to store the PWM
int countdown = 5;                    // set countdown equal to checks
const int checks = 5;
boolean lastSwitch = LOW;
boolean currentSwitch = LOW;


void setup() {
pinMode(LED, OUTPUT);               // declare the LED as an OUTPUT:
mySerial.begin(19200);              // I set this to 19200 and arduino monitor to 2400
mySerial.println("Illuminate me.");
}

boolean debounce(boolean last)
{
boolean current = digitalRead(switchPin);
if (last != current)
{
delay(5);
current = digitalRead(switchPin);
}
return current;
}

void loop() {
currentSwitch = debounce(lastSwitch); // press button to push five readings to serial.
if (lastSwitch == LOW && currentSwitch == HIGH)
{
mySerial.println("ok");
digitalWrite(LED, HIGH);             // delay to clear hand
delay(375);
digitalWrite(LED, LOW);
while(countdown < checks) {          // five checks
  countdown++;
  int sensorValue = analogRead(sensorPin);// read Phototransistor write to variable
  int outputValue = map(sensorValue, 0, 1023, 100, 0);
  mySerial.print(sensorValue);       // send reading to serial
  mySerial.print(".....");
  mySerial.println(outputValue);     // send percentage of total spectrum to serial
  delay(timer);
}
mySerial.println("done");
}
lastSwitch = currentSwitch;
countdown = 0;                          // reset while loop count
}