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Dec 11th, 2019
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  1. //===================== Example1_7 ================================================
  2. #define analogPin 0//connected to analog pin 0
  3. float val= 0; //variable to store the value read
  4. int ledsOn = 0;
  5. void setup(){
  6. Serial.begin(9600);//setup serial
  7. pinMode(LED_BUILTIN, OUTPUT);
  8. }// End of setup function
  9.  
  10. void loop(){
  11. val=analogRead(analogPin);//read the input pin
  12. val = val*5/1024; // Analog value
  13. if (val > 4.65) {
  14. ledsOn++;
  15. Serial.println("LED"); // Shows us in console the LED was turned on
  16. digitalWrite(LED_BUILTIN, HIGH); // Turns LED on
  17. } else {
  18. digitalWrite(LED_BUILTIN, LOW); // Turns LED off
  19. }
  20.  
  21. if (ledsOn > 0) {
  22. Serial.println("First LED on"); // Shows us in console the LED was turned on
  23. }
  24. if (ledsOn > 1) {
  25. Serial.println("Second LED on"); // Shows us in console the LED was turned on
  26. }
  27. if (ledsOn > 2) {
  28. Serial.println("Third LED on"); // Shows us in console the LED was turned on
  29. }
  30. if (ledsOn > 3) {
  31. Serial.println("Fourth LED on"); // Shows us in console the LED was turned on
  32. }
  33. if (ledsOn > 4) {
  34. Serial.println("All LEDs turned off"); // Shows us in console the LED was turned on
  35. ledsOn = 0;
  36. }
  37. delay(200);
  38. }//End of loop function
  39. //============================================================================
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