Ja na przykład używam Sharp GP2Y0A02YK0F - Analogowy czujnik odległości 20-150cm.
Trzy wyprowadzenia GND VCC i na przetwornik ADC.
odległość odczytuję z tablicy jak w kodzie poniżej.
Kod:
// tablica odległości dla przetwornika ADC 10bit (0-1024)
const uint8_t odleglosci_gp2y[] PROGMEM = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
255,254,253,252,251,249,248,247,245,244,243,242,240,239,238,237,236,234,233,232,231,230,228,227,226,
225,224,223,222,220,219,218,217,216,215,214,213,212,211,210,208,207,206,205,204,203,202,201,200,199,
198,197,196,195,194,193,192,191,190,189,189,188,187,186,185,184,183,182,181,180,179,178,178,177,176,
175,174,173,172,172,171,170,169,168,167,167,166,165,164,163,163,162,161,160,159,159,158,157,156,156,
155,154,153,153,152,151,151,150,149,148,148,147,146,146,145,144,144,143,142,142,141,140,140,139,138,
138,137,136,136,135,135,134,133,133,132,131,131,130,130,129,129,128,127,127,126,126,125,125,124,123,
123,122,122,121,121,120,120,119,119,118,118,117,117,116,116,115,115,114,114,113,113,112,112,111,111,
110,110,109,109,108,108,107,107,107,106,106,105,105,104,104,104,103,103,102,102,101,101,101,100,100,
99,99,99,98,98,97,97,97,96,96,96,95,95,94,94,94,93,93,93,92,92,92,91,91,91,90,90,90,89,89,89,88,88,
88,87,87,87,86,86,86,85,85,85,85,84,84,84,83,83,83,82,82,82,82,81,81,81,80,80,80,80,79,79,79,79,78,
78,78,78,77,77,77,77,76,76,76,76,75,75,75,75,74,74,74,74,73,73,73,73,73,72,72,72,72,71,71,71,71,71,
70,70,70,70,70,69,69,69,69,69,68,68,68,68,68,67,67,67,67,67,66,66,66,66,66,66,65,65,65,65,65,64,64,
64,64,64,64,63,63,63,63,63,63,62,62,62,62,62,62,61,61,61,61,61,61,61,60,60,60,60,60,60,60,59,59,59,
59,59,59,59,58,58,58,58,58,58,58,57,57,57,57,57,57,57,57,56,56,56,56,56,56,56,56,55,55,55,55,55,55,
55,55,54,54,54,54,54,54,54,54,54,53,53,53,53,53,53,53,53,53,52,52,52,52,52,52,52,52,52,51,51,51,51,
51,51,51,51,51,51,50,50,50,50,50,50,50,50,50,50,49,49,49,49,49,49,49,49,49,49,48,48,48,48,48,48,48,
48,48,48,48,47,47,47,47,47,47,47,47,47,47,47,47,46,46,46,46,46,46,46,46,46,46,46,46,45,45,45,45,45,
45,45,45,45,45,45,45,44,44,44,44,44,44,44,44,44,44,44,44,43,43,43,43,43,43,43,43,43,43,43,43,43,42,
42,42,42,42,42,42,42,42,42,42,42,42,42,41,41,41,41,41,41,41,41,41,41,41,41,41,41,40,40,40,40,40,40,
40,40,40,40,40,40,40,40,39,39,39,39,39,39,39,39,39,39,39,39,39,39,38,38,38,38,38,38,38,38,38,38,38,
38,38,38,38,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,36,36,36,36,36,36,36,36,36,36,36,36,36,36,
36,36,35,35,35,35,35,35,35,35,35,35,35,35,35,35,35,35,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,
34,34,33,33,33,33,33,33,33,33,33,33,33,33,33,33,33,33,33,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
32,32,32,32,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,30,30,30,30,30,30,30,30,30,30,
30,30,30,30,30,30,30,30,30,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,28,28,28,28,
28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,
27,27,27,27,27,27,27,27,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,
25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,25,24,24,24,24,24,24,24,
24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,23,23,23,23,23,23,23,23,23,23,23,23,23,
23,23,23,23,23,23,23,23,23,23,23,23,23,23,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,
22,22,22,22,22,22,22,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,20,20,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20
};