SparkFun Forums

[the.kaushik]

Hi,
So i purchased a Flexiforce Pressure sensor and am able to connect it with my Arduino. I am also able to get my readings and my code is as shown below>

Code: Select all

void setup() 
{
  // Start serial at 9600 baud
  Serial.begin(9600); 
}

    void loop() 
{
  // Read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  
  // Print out the value you read:
  Serial.println(sensorValue);
  
  // Wait 100 milliseconds
  delay(500);
}

I want to convert this analog reading to relative weight in lbs. Is there a table/formula i can follow which can help me convert these inputs to a weight value. I don't want them to be precise but at least if i can figure out a ballpark number then it would be good enough.

Thanks for helping.

[the.kaushik]

Anyone guys?

[DanV]

Google "scale analog input arduino"
here's a reference link:
https://www.arduino.cc/en/Tutorial/ReadAnalogVoltage

[Valen]

Do you have a table of readouts vs. applied weights yet? As the curve may not be linear, I suggest you get as many intermediate weights as possible. (to cover as many points in the full scale of the sensor)