Week 6

Figure 1 : FSR connected to the Arduino A0 pin

# coding for FSR (read value from sensor)

1. int fsrAnalogPin = 0; // FSR is connected to analog 0
2. int LEDpin = 11; // connect Red LED to pin 11 (PWM pin)
3. int fsrReading; // the analog reading from the FSR resistor divider
4. int LEDbrightness;
6. void setup(void) {
7. Serial.begin(9600); // We'll send debugging information via the Serial monitor
8. pinMode(LEDpin, OUTPUT);
9. }
11. void loop(void) {
12. fsrReading = analogRead(fsrAnalogPin);
13. Serial.print("Analog reading = ");
14. Serial.println(fsrReading);
16. // we'll need to change the range from the analog reading (0-1023) down to the range
17. // used by analogWrite (0-255) with map!
18. LEDbrightness = map(fsrReading, 0, 1023, 0, 255);
19. // LED gets brighter the harder you press
20. analogWrite(LEDpin, LEDbrightness);
22. delay(100);
23. }

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This sensor was function well during testing and confirmed this is official sensor for my pedometer. I reprogrammed the coding to make this sensor count if FSR detect the sensor value high than threshold. So it will count 1 and i declare it as a step.

#coding for FSR counting

int fsrPin = 0;     // the FSR and 10K pulldown are connected to a0

int fsrReading;     // the analog reading from the FSR resistor divider

int counter = 0;

 

void setup(void) {

  // We'll send debugging information via the Serial monitor

  Serial.begin(9600);   

}

void loop()

{

  fsrReading = analogRead(fsrPin); 

   Serial.print(counter);

   Serial.println(" steps");

  

  if (fsrReading > 500 && fsrReading < 600)

  {

    counter=counter + 1;

   Serial.print(counter);

   Serial.println(" steps");

  }

  else

  {

   Serial.print(counter);

   Serial.println(" steps");

  }

  

  delay(100);   

}