Arduino Infra Red Sharp Lib

Based on an original work of Dr. Marcal Casas-Cartagena .

1. Perform 25 reading of analog pin (Nb samples can be changed in .h)
2. Sort values
3. Convert median value to cm

• #include <SharpIR.h>
• SharpIR sharp(ir_analog_pin, model);
• int dist = sharp.distance();

Model :

• GP2Y0A02YK0F --> "20150"
• GP2Y0A21YK --> "1080"
• GP2Y0A710K0F --> "100500"
• GP2YA41SK0F --> "430"

Using MS Excel, we can calculate function (For distance > 15cm) :

Distance = 60.374 X POW(Volt , -1.16)

Using MS Excel, we can calculate function (For distance > 10cm) :

Distance = 29.988 X POW(Volt , -1.173)

Based on the SHARP datasheet we can calculate the linear function: y = 137500x + 1125 which gives us: 1 / ((Volt - 1125) / 137500) = distance_in_cm (For distance > 100cm)

Based on the SHARP datasheet we can calculate the function (For distance > 3cm) :

Distance = 12.08 X POW(Volt , -1.058)