As per my understanding, the Arduino code gets the voltage readings from a force sensor. The MATLAB code uses the voltage readings and converts them into force measurements, in Newtons, using a conversion factor and plots the values in the end.
I went through the MATLAB and Arduino code snippets provided; I suggest doing the following changes in the codes:
In the Arduino code, separate the conversion and reading steps while reading the sensor values. Please use the following syntax for the “analogRead” function:
void loop() {
int sensorValue = analogRead(analogInPin);
int sensorValue2 = analogRead(analogInPin2);
float voltage1 = sensorValue * (5.0 / 1023.0);
float voltage2 = sensorValue2 * (5.0 / 1023.0);
Serial.print(voltage1);
Serial.print(" ");
Serial.println(voltage2);
delay(1000);
}
In the MATLAB code, the “readVoltage” is using the incorrect conversions from analog to voltage. Instead, use “readVoltage” function in the following manner:
% Read voltage from Arduino
x0_voltage = readVoltage(a, 'A1');
z0_voltage = readVoltage(a, 'A5');
From the calibration data provided, the relation between voltage and force seems to be linear and the conversion factor comes out to be 30/0.18 = 166.67.
% Define conversion factor based on calibration data
conversionFactor = 30 / 0.18;
Now multiply the voltage reading by the conversion factor to get the force in Newtons.
% Convert voltage to force in Newtons
x0_force = x0_voltage * conversionFactor;
z0_force = z0_voltage * conversionFactor;
Incorporate these changes into your code and make any necessary adjustments to the plotting if required.
I hope this is beneficial!
