Control TV Using A Touch Remote

1#define analogPin      0          // analog pin for measuring capacitor   voltage
2#define chargePin      13         // pin to charge the capacitor - connected   to one end of the charging resistor
3#define dischargePin   11         // pin   to discharge the capacitor
4#define resistorValue  10000.0F   // change this to   whatever resistor value you are using
5                                  // F   formatter tells compliler it's a floating point value
6
7unsigned long startTime;
8unsigned   long elapsedTime;
9float microFarads;                // floating point variable   to preserve precision, make calculations
10float nanoFarads;
11
12void setup(){
13   pinMode(chargePin, OUTPUT);     // set chargePin to output
14  digitalWrite(chargePin,   LOW);  
15
16  Serial.begin(9600);             // initialize serial transmission   for debugging
17}
18
19void loop(){
20  digitalWrite(chargePin, HIGH);  // set   chargePin HIGH and capacitor charging
21  startTime = millis();
22
23  while(analogRead(analogPin)   < 648){       // 647 is 63.2% of 1023, which corresponds to full-scale voltage 
24   }
25
26  elapsedTime= millis() - startTime;
27 // convert milliseconds to seconds   ( 10^-3 ) and Farads to microFarads ( 10^6 ),  net 10^3 (1000)  
28  microFarads   = ((float)elapsedTime / resistorValue) * 1000;   
29  Serial.print(elapsedTime);        // print the value to serial port
30  Serial.print(" mS    ");         //   print units and carriage return
31
32
33  if (microFarads > 1){
34    Serial.print((long)microFarads);        // print the value to serial port
35    Serial.println(" microFarads");          // print units and carriage return
36  }
37  else
38  {
39    // if   value is smaller than one microFarad, convert to nanoFarads (10^-9 Farad). 
40     // This is  a workaround because Serial.print will not print floats
41
42     nanoFarads = microFarads * 1000.0;      // multiply by 1000 to convert to nanoFarads   (10^-9 Farads)
43    Serial.print((long)nanoFarads);         // print the value   to serial port
44    Serial.println(" nanoFarads");          // print units and   carriage return
45  }
46
47  /* dicharge the capacitor  */
48  digitalWrite(chargePin,   LOW);             // set charge pin to  LOW 
49  pinMode(dischargePin, OUTPUT);             // set discharge pin to output 
50  digitalWrite(dischargePin, LOW);           // set discharge pin LOW 
51  while(analogRead(analogPin) > 0){         //   wait until capacitor is completely discharged
52  }
53
54  pinMode(dischargePin,   INPUT);            // set discharge pin back to input
55}

1#define analogPin      0          // analog pin for measuring capacitor  voltage
2#define chargePin      13         // pin to charge the capacitor - connected  to one end of the charging resistor
3#define dischargePin   11         // pin  to discharge the capacitor
4#define resistorValue  10000.0F   // change this to  whatever resistor value you are using
5                                  // F  formatter tells compliler it's a floating point value
6
7unsigned long startTime;
8unsigned  long elapsedTime;
9float microFarads;                // floating point variable  to preserve precision, make calculations
10float nanoFarads;
11
12void setup(){
13  pinMode(chargePin, OUTPUT);     // set chargePin to output
14  digitalWrite(chargePin,  LOW);  
15
16  Serial.begin(9600);             // initialize serial transmission  for debugging
17}
18
19void loop(){
20  digitalWrite(chargePin, HIGH);  // set  chargePin HIGH and capacitor charging
21  startTime = millis();
22
23  while(analogRead(analogPin)  < 648){       // 647 is 63.2% of 1023, which corresponds to full-scale voltage 
24  }
25
26  elapsedTime= millis() - startTime;
27 // convert milliseconds to seconds  ( 10^-3 ) and Farads to microFarads ( 10^6 ),  net 10^3 (1000)  
28  microFarads  = ((float)elapsedTime / resistorValue) * 1000;   
29  Serial.print(elapsedTime);       // print the value to serial port
30  Serial.print(" mS    ");         //  print units and carriage return
31
32
33  if (microFarads > 1){
34    Serial.print((long)microFarads);       // print the value to serial port
35    Serial.println(" microFarads");         // print units and carriage return
36  }
37  else
38  {
39    // if  value is smaller than one microFarad, convert to nanoFarads (10^-9 Farad). 
40    // This is  a workaround because Serial.print will not print floats
41
42    nanoFarads = microFarads * 1000.0;      // multiply by 1000 to convert to nanoFarads  (10^-9 Farads)
43    Serial.print((long)nanoFarads);         // print the value  to serial port
44    Serial.println(" nanoFarads");          // print units and  carriage return
45  }
46
47  /* dicharge the capacitor  */
48  digitalWrite(chargePin,  LOW);             // set charge pin to  LOW 
49  pinMode(dischargePin, OUTPUT);            // set discharge pin to output 
50  digitalWrite(dischargePin, LOW);          // set discharge pin LOW 
51  while(analogRead(analogPin) > 0){         //  wait until capacitor is completely discharged
52  }
53
54  pinMode(dischargePin,  INPUT);            // set discharge pin back to input
55}