How to continously read data from force sensor connected with Arduino

Hello, everyone

I want to continously read data from a 'flexi force' sensor from arduino to Matlab, and i use the matlab script below to import data:

clc;

clear all;

close all;

a=arduino;

V=zeros(1000,1);

for i=1:1000

V(i)=readVoltage(a,'A0');

end

Here i used a for loop to load data from aduino, is this the only way to import data? The data transfering speed was too low by using this method. Is there any other method to read data from aduino to matlab.

Many thanks for you help!

Thomas

[Steven Evangelos]

Hi Thomas,

try this...

%%

a = arduino;

%%

flexi_count = 0;

flexi_array = [ ];

while flexi_count < 100;

flexi_count = flexi_count + 1;

flexi_volt = readVoltage(a, 'A0');

flexi_array = [flexi_array; [flexi_count, flexi_volt]];

show_me_voltage = [flexi_volt];

disp(show_me_voltage);

if flexi_count == 100;

disp("This is the end of the Flexi_Force_Sensor Loop");

end

flexi_array;

flexi_table = array2table(flexi_array, 'VariableNames', {'Time (0.1s)', 'Flexi_Force_Voltage'});

* Remove " ; " as desired to see flexi_array as an array, or flexi_table as a table with column names *

Answer 1

[Kenny Shu]

Reading sensor values with this approach may be limited to the speed of the software for-loop. Consider reading and storing sensor values using an Arduino Sketch. Then, upon request, bring all of the values into MATLAB at once using serial read/write.

https://www.mathworks.com/help/matlab/matlab_external/getting-started-with-serial-i-o.html

[Thomas Wei]

Hello, Kenny. Thank you for replying and the serial reading is a better way to continously reading data!