Capacitance fir st commit,

[sketchbook_andrea] / advanced_projects / capacitance / led_binary_triple / led_binary_triple.ino

diff --git a/advanced_projects/capacitance/led_binary_triple/led_binary_triple.ino b/advanced_projects/capacitance/led_binary_triple/led_binary_triple.ino
new file mode 100644 (file)
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+++ b/advanced_projects/capacitance/led_binary_triple/led_binary_triple.ino
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+#include <CapacitiveSensor.h>
+
+/*
+ * CapitiveSense Library Demo Sketch
+ * Paul Badger 2008
+ * Uses a high value resistor e.g. 10M between send pin and receive pin
+ * Resistor effects sensitivity, experiment with values, 50K - 50M. Larger resistor values yield larger sensor values.
+ * Receive pin is the sensor pin - try different amounts of foil/metal on this pin
+ *
+ * Schema: http://i.stack.imgur.com/FMI00.png
+ */
+
+
+
+
+CapacitiveSensor   cs_2_3 = CapacitiveSensor(2, 3);       // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired
+CapacitiveSensor   cs_2_4 = CapacitiveSensor(2, 4);
+CapacitiveSensor   cs_2_5 = CapacitiveSensor(2, 5);
+
+
+
+
+const int led = 13;        // pin that the Led is attached to
+int sensorMin = 50;        // minimum sensor value
+int sensorMax = 3200;           // maximum sensor value
+void setup()
+{
+  cs_2_3.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example
+  Serial.begin(9600);
+  pinMode(led, OUTPUT);
+}
+
+void loop()
+{
+  long start = millis();
+  long total1 =  cs_2_3.capacitiveSensor(30);
+  long total2 =  cs_2_4.capacitiveSensor(30);
+  long total3 =  cs_2_5.capacitiveSensor(30);
+
+  if (total1 > (sensorMax / 2 - sensorMin)) {
+    digitalWrite(led, HIGH);
+    Serial.println("Primo");
+  }
+
+
+  if (total2 > (sensorMax / 2 - sensorMin)) {
+    digitalWrite(led, HIGH);
+    Serial.println("Secondo");
+  }
+
+  if (total3 > (sensorMax / 2 - sensorMin)) {
+    digitalWrite(led, HIGH);
+    Serial.println("terzo");
+  }
+
+  Serial.print(millis() - start);        // check on performance in milliseconds
+  Serial.print("\t Capacitance 1: ");                    // tab character for debug windown spacing
+
+  Serial.print(total1);                  // print sensor output 1
+  Serial.print("\t 2: ");                    // tab character for debug windown spacing
+
+  Serial.print(total2);                  // print sensor output 1
+  Serial.print("\t 3: ");                    // tab character for debug windown spacing
+  Serial.println(total3);                  // print sensor output 1
+
+  delay(1);                             // arbitrary delay to limit data to serial port
+}
+