busybox

breathing pwm cycle

 68,  71,  74,  77,  79,  82,  85,  89,  92,  95,  98, 101, 105, 108, 112, 115,
119, 122, 126, 130, 134, 137, 141, 145, 149, 153, 157, 160, 164, 168, 172, 176, 
180, 184, 187, 191, 195, 198, 202, 206, 209, 212, 216, 219, 222, 225, 228, 230, 
233, 236, 238, 240, 242, 244, 246, 248, 249, 250, 252, 252, 253, 254, 254, 255, 
255, 255, 254, 254, 253, 253, 252, 250, 249, 248, 246, 244, 242, 240, 238, 236, 
233, 230, 228, 225, 222, 219, 216, 212, 209, 206, 202, 199, 195, 191, 187, 184, 
180, 176, 172, 168, 164, 161, 157, 153, 149, 145, 141, 137, 134, 130, 126, 123, 
119, 115, 112, 108, 105, 102,  98,  95,  92,  89,  86,  82,  80,  77,  74,  71,  
 68,  66,  63,  61,  58,  56,  54,  51,  49,  47,  45,  43,  41,  39,  37,  36,  
 34,  32,  31,  29,  28,  26,  25,  23,  22,  21,  20,  18,  17,  16,  15,  14,  
 13,  12,  12,  11,  10,   9,   8,   8,   7,   6,   6,   5,   5,   4,   4,   3,   
  3,   2,   2,   2,   1,   1,   1,   1,   0,   0,   0,   0,   0,   0,   0,   0,
  0,   0,   0,   0,   0,   0,   0,   0,   0,   1,   1,   1,   1,   2,   2,   2,   
  3,   3,   4,   4,   5,   5,   6,   6,   7,   8,   8,   9,  10,  11,  11,  12,  
 13,  14,  15,  16,  17,  18,  20,  21,  22,  23,  25,  26,  27,  29,  30,  32,  
 34,  35,  37,  39,  41,  43,  45,  47,  49,  51,  53,  56,  58,  60,  63,  66

delay durations

  10,  11,  12,  13,  14,  15,  16,  17,   18,  19,  20,  21,  22,  23,  24,  25,
  26,  27,  28,  29,  30,  31,  32,  33,   34,  35,  36,  37,  38,  39,  40,  41,
  42,  43,  44,  45,  46,  47,  48,  49,   50,  51,  52,  53,  54,  55,  56,  57,  
  58,  59,  60,  61,  62,  63,  64,  65,   66,  67,  68,  69,  70,  71,  72,  73,  
  74,  75,  76,  77,  78,  79,  80,  81,   82,  83,  84,  85,  86,  87,  89,  91,  
  93,  95,  97,  99, 101, 103, 105, 107,  109, 111, 113, 115, 117, 119, 121, 123, 
 125, 127, 129, 131, 133, 135, 137, 139,  141, 143, 145, 147, 149, 151, 153, 155, 
 157, 159, 161, 163, 165, 167, 169, 171,  173, 176, 179, 182, 185, 188, 191, 194, 
 197, 200, 203, 206, 209, 212, 215, 218,  221, 224, 227, 230, 233, 236, 239, 242, 
 245, 248, 251, 254, 257, 260, 264, 268,  272, 276, 280, 284, 288, 292, 296, 300, 
 304, 308, 312, 316, 320, 324, 328, 332,  336, 340, 344, 348, 353, 358, 363, 368, 
 373, 378, 383, 388, 393, 398, 403, 408,  413, 418, 423, 428, 433, 439, 445, 451, 
 457, 463, 469, 475, 481, 487, 493, 499,  505, 511, 517, 523, 530, 537, 544, 551, 
 558, 565, 572, 579, 586, 593, 600, 607,  615, 623, 631, 639, 647, 655, 663, 671, 
 679, 687, 695, 704, 713, 722, 731, 740,  749, 758, 767, 776, 786, 796, 806, 816, 
 826, 836, 846, 856, 866, 877, 888, 899,  910, 921, 932, 943, 954, 966, 978, 990,