1 #include <CapacitiveSensor.h>
4 * CapitiveSense Library Demo Sketch
6 * Uses a high value resistor e.g. 10M between send pin and receive pin
7 * Resistor effects sensitivity, experiment with values, 50K - 50M. Larger resistor values yield larger sensor values.
8 * Receive pin is the sensor pin - try different amounts of foil/metal on this pin
12 CapacitiveSensor cs_4_2 = CapacitiveSensor(4,2); // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired
13 CapacitiveSensor cs_4_6 = CapacitiveSensor(4,6); // 10M resistor between pins 4 & 6, pin 6 is sensor pin, add a wire and or foil
14 CapacitiveSensor cs_4_8 = CapacitiveSensor(4,8); // 10M resistor between pins 4 & 8, pin 8 is sensor pin, add a wire and or foil
18 cs_4_2.set_CS_AutocaL_Millis(0xFFFFFFFF); // turn off autocalibrate on channel 1 - just as an example
24 long start = millis();
25 long total1 = cs_4_2.capacitiveSensor(30);
26 long total2 = cs_4_6.capacitiveSensor(30);
27 long total3 = cs_4_8.capacitiveSensor(30);
29 Serial.print(millis() - start); // check on performance in milliseconds
30 Serial.print("\t"); // tab character for debug windown spacing
32 Serial.print(total1); // print sensor output 1
34 Serial.print(total2); // print sensor output 2
36 Serial.println(total3); // print sensor output 3
38 delay(10); // arbitrary delay to limit data to serial port