// These constants won't change. They're used to give names to the pins used:
#define R_LIGHT A6  // Analog input pin that the potentiometer is attached to
#define C_LED 4
#define INA1 19
#define INB1 41
#define M1 12
#define EN1 18
#define CS1 A7

float sensorValue = 0;        // value read from the pot


void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(115200);
  TCCR1B = TCCR1B & 0b11111000 | 0x01;
  pinMode(INA1, OUTPUT);
  pinMode(INB1, OUTPUT);
  pinMode(EN1, OUTPUT);
  digitalWrite(INA1, HIGH);
  digitalWrite(INB1, LOW);
  digitalWrite(EN1, HIGH);
  analogWrite(M1, 255);
}

void loop() {
  digitalWrite(INA1, HIGH);
  digitalWrite(INB1, LOW);
  delay(100);
  sensorValue = analogRead(R_LIGHT);
  Serial.print("LIGHT = ");
  Serial.print(sensorValue);
  sensorValue = analogRead(CS1)*(5000/1023.)*(5000/2400);
  //sensorValue = analogRead(CS1)*(5000/1023.);
  Serial.print(" CURRENT = ");
  Serial.println(sensorValue);
  delay(1000);
  digitalWrite(INA1, LOW);
  digitalWrite(INB1, LOW);
  delay(1000);

  // wait 2 milliseconds before the next loop for the analog-to-digital
  // converter to settle after the last reading:
  delay(2);
}