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inagantid20

LED latch BAR- one light turns, then two, then 3

Jun 23rd, 2017
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  1. /*
  2. * Divya Inaganti
  3. * June 22, 2017
  4. * LED latch BAR- one light turns, then two, then 3
  5. */
  6. const int SER = 8;
  7. const int LATCH = 9;
  8. const int CLK = 10;
  9.  
  10. int lights[9]= {0, 1, 2, 4, 16, 32, 64, 128};
  11. int bar[9]= {0, 1, 3, 7, 15, 31, 63, 127, 255};
  12.  
  13.  
  14. void setup()
  15. {
  16. pinMode(SER, OUTPUT);
  17. pinMode(LATCH, OUTPUT);
  18. pinMode(CLK, OUTPUT);
  19.  
  20. digitalWrite(LATCH, LOW);
  21. shiftOut(SER, CLK, MSBFIRST, B00000000);
  22. digitalWrite(LATCH, HIGH);
  23. delay(200);
  24. digitalWrite(LATCH, LOW);
  25. shiftOut(SER, CLK, MSBFIRST, B11111111);
  26. digitalWrite(LATCH, HIGH);
  27. delay(200);
  28. digitalWrite(LATCH, LOW);
  29. shiftOut(SER, CLK, MSBFIRST, B00000000);
  30. digitalWrite(LATCH, HIGH);
  31. }
  32.  
  33. void loop()
  34. {
  35. // for (int i= 0; i<9; i ++)
  36. //
  37. // {
  38. // digitalWrite(LATCH, LOW);
  39. // shiftOut (SER, CLK, MSBFIRST, lights[i]);
  40. // digitalWrite(LATCH, HIGH);
  41. // delay(100);
  42. // }
  43. {
  44. for (int j= 0; j<9; j ++)
  45. {
  46. digitalWrite(LATCH, LOW);
  47. shiftOut (SER, CLK, MSBFIRST, bar[j]);
  48. digitalWrite(LATCH, HIGH);
  49. delay(200);
  50. }
  51.  
  52. // {
  53. // for (int j= 0; j<9; j ++)
  54. // {
  55. // digitalWrite(LATCH, LOW);
  56. // shiftOut (SER, CLK, MSBFIRST, bar[j]);
  57. // digitalWrite(LATCH, HIGH);
  58. // delay(200);
  59. // }
  60. // }
  61. }
  62. }
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