# Problem with Spektrum (library)
**URL:** https://discourse.processing.org/t/problem-with-spektrum-library/43006
**Category:** Libraries
**Created:** [October 18, 2023, 1:12pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006 "2023-10-18T13:12:40Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 18, 2023, 1:12pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/1 "2023-10-18T13:12:40Z")
Hello everyone I have a problem connecting the library. I am trying to run the Spektrum program ([GitHub - pavels/spektrum: rtl-sdr spectrum analyzer](https://github.com/pavels/spektrum) ) I don’t get the problem No library found for rtlspektrum
Libraries must be installed in a folder named ‘libraries’ inside the sketchbook folder (see the Preferences window).
The package “rtlspektrum” does not exist. You might be missing a library.
Although all libraries are in place. Please help me to sort out the problem. Mac Os 14.0
---
### Author:  [@jafal](https://discourse.processing.org/u/jafal)
#### Post date: [October 18, 2023, 9:00pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/2 "2023-10-18T21:00:41Z")
Hi
I run this more than year ago operating systems windows 7 all I needed installing RTL drived
> [@Spectrum analyzer software/ hardware](https://discourse.processing.org/t/spectrum-analyzer-software-hardware/34175):
>
> hi this example about the great power using processing programming i run it it is a great tool with this hardware for some testing i replaced using my heavy and expensive spectrum analyzer with this software
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 4:49am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/3 "2023-10-19T04:49:04Z")
everything works fine on windows, but it doesn’t work on mac os… and I need it on mac os
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### Author:  [@svan](https://discourse.processing.org/u/svan)
#### Post date: [October 19, 2023, 7:01am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/4 "2023-10-19T07:01:21Z")
Error messages indicate that a library can’t be found. Something to try (no promises it will work): 1) create a folder named ‘code’ in the sketch folder. 2) Place the required libraries in the ‘code’ folder.
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 19, 2023, 7:08am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/5 "2023-10-19T07:08:19Z")
Yeah.
Maybe processing doesn’t have the permission to use your library folder
Then you have to receive permission from os.
**In general**
In general you must install the library **and** have one
or more `import....` lines in your Sketch.
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 8:05am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/6 "2023-10-19T08:05:12Z")
I tried these options, but nothing works…
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 19, 2023, 10:26am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/7 "2023-10-19T10:26:18Z")
open your Sketch
drag the jar file of the library onto the Sketch (in the IDE)
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 11:13am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/8 "2023-10-19T11:13:27Z")
frame cannot be resolved to a variable
now such a mistake
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### Author:  [@glv](https://discourse.processing.org/u/glv)
#### Post date: [October 19, 2023, 11:14am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/9 "2023-10-19T11:14:37Z")
Hello @itan21,
The _spektrum.exe_ runs fine here on Windows 10.
There are related issues here:
> **[Issues · pavels/spektrum](https://github.com/pavels/spektrum/issues)**
>
> rtl-sdr spectrum analyzer. Contribute to pavels/spektrum development by creating an account on GitHub.
I have not yet tried to run the sketch (PDEs) directly.
`:)`
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 12:13pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/10 "2023-10-19T12:13:55Z")
mac os only… i I don’t have a pc
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 19, 2023, 3:01pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/11 "2023-10-19T15:01:41Z")
> [@itan21](#):
>
> frame cannot be resolved to a variable
Okay, but then the library issue is solved and this is another problem. Right?
Can you please show your entire code? Or the lines with frame?
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 19, 2023, 3:09pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/12 "2023-10-19T15:09:29Z")
by the way, do other libraries work in your environment?
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 4:41pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/13 "2023-10-19T16:41:30Z")
This is a new problem…
the problem with libraries has been solved…
yes, other libraries are working.
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### Author:  [@svan](https://discourse.processing.org/u/svan)
#### Post date: [October 19, 2023, 5:03pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/14 "2023-10-19T17:03:23Z")
Try defining frame at the top:
> Frame frame;
```auto
import controlP5.*;
import controlP5.Button;
import rtlspektrum.Rtlspektrum;
import java.io.FileWriter;
import java.util.*;
import java.awt.*;
import processing.serial.*;
Frame frame;// added
```
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 5:06pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/15 "2023-10-19T17:06:27Z")
more detailed pleas…
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### Author:  [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [October 19, 2023, 6:01pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/16 "2023-10-19T18:01:47Z")
you don’t really need these lines
```auto
if (frame != null) {
surface.setResizable(true);
}
```
comment them out
```auto
// if (frame != null) {
// surface.setResizable(true);
// }
```
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 8:25pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/17 "2023-10-19T20:25:06Z")
ha ha ha, I guess I’ll never run it)))
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 19, 2023, 8:27pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/18 "2023-10-19T20:27:10Z")
why am I so stupid in programming… it wouldn’t be bad if it was simple.the dmg package and everything that needed to be copied into programs and used…
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### Author:  [@svan](https://discourse.processing.org/u/svan)
#### Post date: [October 19, 2023, 9:08pm UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/19 "2023-10-19T21:08:21Z")
Callback is here: [https://github.com/nativelibs4java/BridJ/blob/master/src/main/java/org/bridj/Callback.java](https://github.com/nativelibs4java/BridJ/blob/master/src/main/java/org/bridj/Callback.java) if you want it. I’m not sure this code was ever meant to run on MacOS; all that the documentation mentions is Windows and Linux. It’s a major undertaking to debug it on a Mac even for a veteran programmer.
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### Author:  [@itan21](https://discourse.processing.org/u/itan21)
#### Post date: [October 20, 2023, 5:50am UTC](https://discourse.processing.org/t/problem-with-spektrum-library/43006/20 "2023-10-20T05:50:36Z")
I understand you! Well, then I will use a computer with Windows, unfortunately)