Fft of real-time data

Projects General Guidance
1

I am doing some vibration analysis, an accelerometer is attached to the object. I am also using the Telnetstream library with the mpu6050 using WiFi. The data from the accelerometer is viewed on putty.

Can I get tips or advice on how to get the FFT of the data from putty in real-time?

2

Running on the PC side?

3

Yes, please.

4

Maybe something here:
https://listoffreeware.com/free-audio-spectrum-analyzer-software-windows/

5

Thanks for this but can figure out how to link to the wifi or putty

6

Actually, you are getting it from serial, not putty. You could see if there is anything written in Python or Matlab.

7

Putty can write a log file containing the raw data. You will very likely have to reformat the data for input to the FFT program you choose.

8

Yeah, but... not real time.

9

Some languages may not permit it, but for Windows, a memory map file can be open for write by one program and open for read by another:
https://docs.microsoft.com/en-us/dotnet/standard/io/memory-mapped-files

A memory-mapped file contains the contents of a file in virtual memory. This mapping between a file and memory space enables an application, including multiple processes, to modify the file by reading and writing directly to the memory. You can use managed code to access memory-mapped files in the same way that native Windows functions access memory-mapped files, as described in Managing Memory-Mapped Files.

Obviously, one may need to create these two utility programs.

We could also, I believe, use PowerShell to establish pipes for two applications, but I cannot find a reference to confirm.

It may be possible to do just establish piping from command shell:
Command Redirection, Pipes - Windows CMD - SS64.com

Code for serial terminals in Windows is easy to find, so building up a terminal program should be straight forward.

10

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