/* Original project by Oh Hai Seng 07 November 2013
To watch the Demo of his Project:
http://www.youtube.com/watch?v=X4QNT5hOHLs&list=TLlm-tAV1gEzDF4VV39VdjCSLNlfe0tTpU
*/
// Import the CapacitiveSensor Library.
#include <CapacitiveSensor.h>
#define speaker 11
// Set the Send Pin & Receive Pin.
CapacitiveSensor cs_2_3 = CapacitiveSensor(2,3);
CapacitiveSensor cs_2_4 = CapacitiveSensor(2,4);
CapacitiveSensor cs_2_5 = CapacitiveSensor(2,5);
CapacitiveSensor cs_2_6 = CapacitiveSensor(2,6);
CapacitiveSensor cs_2_7 = CapacitiveSensor(2,7);
CapacitiveSensor cs_2_8 = CapacitiveSensor(2,8);
CapacitiveSensor cs_2_9 = CapacitiveSensor(2,9);
CapacitiveSensor cs_2_10 = CapacitiveSensor(2,10);
void setup()
{
cs_2_6.set_CS_AutocaL_Millis(0xFFFFFFFF); // turn off autocalibrate on channel 1 - just as an example
// Arduino start communicate with computer.
Serial.begin(9600);
}
void loop()
{
// Set a timer.
long start = millis();
// Set the sensitivity of the sensors.
long total1 = cs_2_3.capacitiveSensor(3000);
long total2 = cs_2_4.capacitiveSensor(3000);
long total3 = cs_2_5.capacitiveSensor(3000);
long total4 = cs_2_6.capacitiveSensor(3000);
long total5 = cs_2_7.capacitiveSensor(3000);
long total6 = cs_2_8.capacitiveSensor(3000);
long total7 = cs_2_9.capacitiveSensor(3000);
long total8 = cs_2_10.capacitiveSensor(3000);
Serial.print(millis() - start); // check on performance in milliseconds
Serial.print("\t"); // tab character for debug windown spacing
Serial.print(total1); // print sensor output 1
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total2); // print sensor output 2
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total3); // print sensor output 3
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total4); // print sensor output 4
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total5); // print sensor output 5
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total6); // print sensor output 6
Serial.print("\t"); // Leave some space before print the next output
Serial.print(total7); // print sensor output 7
// Leave some space before print the next output
Serial.print("\t");
Serial.println(total8); // print sensor output 8
// "println" - "ln" represent as "line", system will jump to next line after print the output.
// When hand is touched the sensor, the speaker will produce a tone.
// I set a threshold for it, so that the sensor won't be too sensitive.
if (total1 > 500) tone(speaker,131); // frequency
if (total2 > 500) tone(speaker,147); // you can see https://www.arduino.cc/en/Tutorial/toneMelody if you want to change frequency
if (total3 > 500) tone(speaker,165);
if (total4 > 500) tone(speaker,175);
if (total5 > 500) tone(speaker,196);
if (total6 > 500) tone(speaker,220);
if (total7 > 500) tone(speaker,247);
if (total8 > 500) tone(speaker,262);
// When hand didn't touch on it, no tone is produced.
if (total1<=500 & total2<=500 & total3<=500 & total4<=500 & total5<=500 & total6<=500 & total7<=500 & total8<=500)
noTone(speaker);
delay(10); // arbitrary delay to limit data to serial port
}
