resonance | : black_medium_small_square : Resonance | 5kb React | Animation library

I have this code

I'm new to React and I want to implement a form where the user is given N inputs and is asked to copy/paste some contents in it (he can also click on a + or - button to add or remove some inputs but let's keep it simple for now).

The idea is that, for each input, the user will copy/paste some data and, on each input an onChange listener is attached so that each time an input is changed, it will trigger a call to an API or backend service to validate the data. Once the data is validated, it will return whether or not the user was right (by changing the background color of the input for example). Here is a picture:

The problem is that, let say the user copies/pastes gorilla in the first input and the async call takes 10s, but then 2s after it copied/pasted gorilla in the first input, he copies/pastes spaceship in the second input (and this async call takes 4s to return let's say). What happens with my current version is that, since the 2nd call finished before the first one, isValid is updated for the second input while it is not for the first input.

This is due to the fact that I'm using useEffect and the clean function. I have also tried to use useState instead but each time I ran into a race condition...

Notes:

• If the user entered gorilla in the first input and 1s after he modifies the same input and enters giraffe. If the first async call did not finish yet, I prefer to kill it and only retrieve the validation for the latest call made for that same input (this is why I used a clean function in my useEffect)
• Even if the problem of stopping the validation of other inputs is solved, I think there will always be a race condition as in my useEffect I am modifying my useState associated to each of my input so I'm not sure how to go about it.

Here is tiny sample to replicate my current behavior:

For my physics Research Practicum I'm analyzing the resonance frequency of a wine glass, which involves importing an audio file and taking its Fourier transform (using scipy.fftpack). So everything is going well, but when I plot the Fourier transform, I get two lines: one is the plot you would expect, but the other one is a horizontal line (see picture). I've looked into the variables I'm plotting but nothing seems out of the ordinary there.

Here's the code (you'll need this .wav file (watch out for your ears, headphone users!)):

I am trying to make a chat application with scaledrone. I was following this tutorial: https://www.scaledrone.com/blog/javascript-chat-room-tutorial/ but after setting up the basic chat, I wanted to let users define their own name. So I made an input box and then tried using js to take the input box value and assign it to a variable. And then for the name part of the chat application, instead of using the random name function I was using earlier. However, I got the error "can not read properties of null(reading addEventListener) in my console and the submit button did not show up at all. What did I do wrong? The code I used is in pastebin links below. The scaledrone documentation is here: https://www.scaledrone.com/docs/api-clients/javascript Thanks in advance. also, I added the raw text of my javascript file below because stack overflow won't let me post without adding some code(first time posting to stack overflow lol).

https://pastebin.com/9DvF3WnX https://pastebin.com/UrZ1xsMB

I want to build a PetaLinux Image for my Ultra96v2. I followed this guide up until building my application project in Vitis. It looks promising but then while building the application project for my custom platform, Vitis throws this error:

I'm having an issue where I'm trying to create a custom cursor/crosshair within my canvas. The issue I have is the specified Length, Width, and Gap given to the four rectangles to form the cursor is producing the incorrect amount of pixels for the center gap.

Live CodeSandbox: https://codesandbox.io/s/nifty-resonance-bcl0m

In the above example, measuring the cursors Length and Width is the correct amount but, the center gap is giving 10 pixels instead of 6 pixels (Gap * 2). I know the issue must be due to how I'm calculating the X/Y positions of each rectangle but I can't seem to find the correct formula that doesn't throw off the whole look of the cursor.

I am trying to interface my SparkFun Qwiic Haptic Driver - DA7280 with Python3. My current set-up is as follows:

PC -USB to micro-USB-> SparkFun RedBoard Qwiic -Qwiic Cable-> Haptic Driver

I've trialed the accompanying Arduino sketch & managed to get the C++ code up and running fine; modulating the vibrator's intensity & frequency just fine.

Then, what I would like to do is to trigger a vibration pulse in time with some Python code. Such that, when python prints out a word, for example, a vibratory impulse would be triggered.

I have tried using pySerial to interface with the microcontroller, trigger the controller to run a pre-loaded script. This was worked fine with a simple C++ script to repeat an LED blink uploaded to the micro-controller:

Preface: I am new to websockets

I am able to open, close and receive messages once I connect to the WebSocket but I have no idea how to read the incoming data.

The message I receive looks like the following:

I am trying to make a Modal component. I would like that when the modal appears, it appears with a transition just like when it disappears. This is currently very jerky, why and how can I fix it?

I would like that when the modal is shown it is shown with an animation and the same behavior when the modal disappears (click on the button).

thank you very much for the help, I know I will learn a lot.