Love this. To be completely honest - I did look up "decimation" when I wrote this to ensure that the slider accurately reflected the standard terminology. 😉 My training is in applied math so DSP is actually a little peripheral to my trade.

@@curiores111 nice! I have a friend who just got his master's in applied math. What area do you work in now, besides making seriously kick-ass educational videos? I'm considering doing the same, very curious to see how people put it to use.

@@evanbarnes9984 Right now, I work as a (software) engineer. Did a short schtick in academia, didn't stick. Applied math is a mixed bag, (I only did it because I loved it), but there's definitely some opportunities (probably not as obvious as with other degrees). Several in my class ended up in machine learning/data science type jobs.

@@curiores111 awesome, thank you! That's definitely useful information. My friend also wound up in ostensibly data science and ML too, but laments how often data science gets boiled down to making spreadsheets and writing SQL queries. He does also do some pretty cool ML work, to be fair. Thanks again! Hearing what other people do definitely helps.

I'm glad that the presentation is clear, and yes more viewers is always nice but tbh I'm pretty happy with where the channel is at... I mostly just work on passion projects. 😊

Two suggestions: 1. Give an option to create a second (right) y-axis and select which data channels to put on that axis 2. Give an option to rescale the y-axis when some channels are hidden. For example, if one channel is in the 100-1000 range and another is in the 10-100 range, it'd be nice if clicking off channel 1 rescales the y-axis to show the 10-100 range. Probably shouldn't default to that, but adding an option is nice.

Thanks Alex!

Thank you, you are too kind.

Appreciate this, and thanks for stopping by Malcolm 😊

Well thank you so much Asefron 😊

Much obliged Fish. I'll do what I can

👏👏 I hope you enjoy.

Thanks Alfa! Glad you think so, and thanks for asking about the code. :) It's written in JavaScript... but more than JavaScript per se it uses a set of frameworks/libraries: Electron, React, Material UI, SerialPort from NodeJS, and ChartJS. ...and of course a lot of hacky javascript and CSS styling 😉

Hey thanks Dylan, my first documented user! Glad you tried it out.

Thanks! I'm reasonably happy with the response -- its always a crap shoot creating for youtube. :)

Absolutely! The app was a labor of love, and I'm so glad that it has been able to be useful to you in tuning your D-O droid! Thanks for the feature request! It's irritating how the serial data often screws up in the first line. This is the reason I left out the normal naming by writing the first line in the setup function... That being said, we could certainly have it be an optional function that creates a name based on the first line of data. The other option would be to allow you to edit signal names inside the app. Does one of those options make more sense to you? Sending serial messages is a pretty reasonable request. The simplest would probably be a pop-up window to send a message after a button press. Another option is to include it in the serial monitor widget as done in the Arduino app. This would mean splitting that window up. That's a good option too. A third option would be to add a fourth optional widget that becomes afixed to the bottom of the main window for sending messages to the arduino. Just an edit field and a button to send the message. Any of those options preferable? If you want action on this I recommend creating an issue on the github page. github.com/curiores/SerialAnalyzer I come back to the app occasionally to update it and this is where I look.

You're too kind Ahmad! thank you for stopping by. 😊

@@curiores111 Actually, you are super kind. I have been using your Low Pass 2.0 and now adding the analyzer.

Many thanks 🙏

Great to see you Markus! You are very kind and I am glad that you enjoyed the audio. I have been working on getting the right pace and tone to make the videos feel interesting but relaxed.

Thanks Douglas, my Brazilian friend! 🥳

Hey thanks for the feedback. If you make an issue on GitHub I'll visit it if I'm ever working in this app again. How long did it take? Hmm. Few weekends. Maybe 60-80 hours? I wasn't very familiar with electron, react, or MUI, so there was definitely a learning curve. (also keep in mind, there's no testing -- this isn't production code). I had some interest in learning those "tools" so this was a nice way to engage with them more deeply. Thanks for the encouragement. It's been hard to find the time/motivation for videos, but I'm working on one now. See if I can get it finished.

I really appreciate that Mr. Jamate! 😊

Nice to see you, and thank you for the compliment, Tahir 😉

I'm not sure how to answer... you could do some on the fly DFT computations and show the result on the lcd display? Is that what you mean?

Yes I get the same warning. It's custom software in an EXE, so Windows freaks out. I'm guessing there's some way to register it with Windows so that doesn't happen -- but I don't know what that is.

@@curiores111 Ok, thanks, I will download it. I appreciate your work too much not to take advantage of it.

I wouldn't use this type of application for that amount of data. Javascript isn't a performance language, so it's unlikely you'll get enough performance to meet your requirements. If I'm thinking generally about the problem generally I'd probably use a low-level language like C++ to handle the data. Then, write an API to transmit the processed data (e.g., the fourier coefficients within a requested range) to the app. That could probably be a modification of this app... but at least on the surface I think that would be a much bigger project than the existing app. There are probably existing solutions to this problem. I'm not familiar with them. Some of the apps you mentioned could be the way to go. Good luck!

Wow thank you so much, how generous! 💖 I am always so surprised to receive a tip.

I coded the app in VS code...but the packaging is unrelated to that. Definitely did not use Visual Studio. Are you familiar with Node/Electron? It basically allows you to use a web-stack to develop OS-native apps. My stack is an electron react app using Material-UI for the interface. I've added several node packages for additional functionality required by the app. Electron packages that all together into the OS-native apps and generates the installers. Specifically, I used electron-builder.

oh thanks:) I've not use electron before but will check it out. Also, your other videos have been generally[really] useful. I feel like sometimes people say generally useful but what they really mean to say is really useful, or that's just me. Thanks again!@@curiores111

Let me see if I can dig it up.

Here's what I have saved. I can't promise that it's what I used in the video, but it looks pretty close to me. It just generates a signal, which is written to the DAC (this was on an adafruit M4 which has a built in DAC on A0 and A1). Then, it reads the input and output signals from some probes looking into the circuit on A2 and A3. Pretty simple stuff: void setup() { Serial.begin(115200); } void loop() { float t = millis()/1000.0; float tRep = (millis() % 10000)/1000.0; float xmag = 4096/4.0; // max 4096 float x = xmag*(1+sin(2*PI*((60-0)/(10.0*2))*pow(tRep,2))); float Vin = x/4096.0*3.3; analogWrite(A0,x); float raw = analogRead(A2); float Vout1 = raw*3.3/1023.0; float raw2 = analogRead(A3); float Vout2 = raw2*3.3/1023.0; Serial.print(millis()); Serial.print(" "); Serial.print(Vout2); Serial.print(" "); Serial.print(Vout1); Serial.println(); }

You're welcome! And...did you actually donate $5? I dont see how thats possible, but if you did, that is very kind!

Glad to hear that, thanks for stopping by ❤️

That is unfortunate... I did test on Windows 10. Not sure what might be different.

Sort of... you would need an input signal that spanned over the frequencies of interest. That wouldn't really be the responsibility of the app, per se. Generally speaking that would be more of an Arduino level task. The way that this app is designed, a viable feature would be to generate a graph of the frequency response based on an input signal and an output signal over some specified time interval. To be honest I might not mind adding this... I have been planning a video on the bode diagram, which would go nicely with this addition. Interesting.

Of course Francisco, and thanks for asking. It's completely free and you can use it for any purpose.

@@curiores111 Thank you

Glad you think so.

Glad to hear that! That sounds fine... probably something not quite right starting up the electron app. Unfortunately can't think of a reason off the top of my head 😕

Just had a change to look back at this. I had forgotten some of the custom scripts required to start the electron app. To run it, try "yarn electron:start". I will see if I can build it on Linux today.

@@curiores111 Hey, this works! Thanks! I still need to actually test it but I can see the app window now. Thanks a million.

@@avi-brown Sure no problem. I did some brief testing in Ubuntu 22.04 and tweaked the app a touch. Seems to be working. Uploaded the package on GitHub. Still could use some additional tweaking in the serialport connection...but it's probably serviceable for now.

Probably an incompatibility with the OS. It would probably need to be rebuilt. I did build it on ubuntu -- but I don't recall the version so that's definitely not going to guarantee anything. Odd that you weren't able to compile it. But, compiling anything with dependencies often requires some debugging for getting the right things installed on your system, so not terribly surprising.

Awesome! 😎

Pause and then screenshot ... there's no export.

Thanks Ali! 😄

thanks! ✋

The app picks up whatever signals you are writing to the serial port (like the Arduino serial plotter). So if you write additional columns of data, those will show up as additional channels. Serial.print(); Serial.print(" "); Serial.print(); Serial.println();

Feel free to create an issue on the GitHub page

Yeah I hit the github LFS bandwidth limits. I updated to a google drive link. Let me know if you have an issue still.

@@curiores111 Thank you it worked!

nvm i just need to restart

Yeah access denied is usually because another program (e.g., Arduino serial monitor) is connected to the device.

Really? I just tried uninstalling from the windows apps menu and it worked. Did you try that? (The installer is an existing electron utility -- could certainly be buggy. I haven't had an issue with that so far though)

@@curiores111 I had tried cclean and win10 uninstaller already. Everytime i tried. I was told serial analyzer was running and refuse to uninstall. Finally, I had to delete it in the Appdata folder. Note it was deleted and not uninstall. BTW, my Mcafee reported threat.

🙄

That can happen when another program is interacting with the device. Is the Arduino IDE interacting with it?

@@curiores111 I was able to fix it, because the IDE was using the COM port so it couldn't connect to the analyzer app Thank you