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How to Extract Specific Data from Record File for Serial Connection

Asked by B
on 16 May 2013
I would like to extract specific data from a sensor connected to an Arduino UNO, and have it stored for analysis. Using the record function, the probe returns data in this format:
4 < 41 uchar values.
48 75 6d 69 64 69 74 79 3a 20 33 35 2e 30 30 20
25 09 54 65 6d 70 65 72 61 74 75 72 65 3a 20 32
34 2e 30 30 20 2a 43 0d 0a
which equates to
Humidity: 35.00 % Temperature: 24.00 *C
How can I store only the numerical values (in this case 35.00 and 24.00)?

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1 Answer

Answer by Zoltan
on 16 May 2013
 Accepted Answer

I had the same problem. I changed the arduino program to have only numbers in two columns.

  1 Comment

That was perfect! Thank you.
I ended up modifying the Arduino code to have only two columns, and then used the following MATLAB code based on this thread to record the data
for i=1:length(x)
y(i) = fscanf(s, '%d%d', 6);
z(i) = fscanf(s, '%d%d', 6);
end

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