A testbed project for HUB75 panels with WebUI

[vortigont]

Hi all,
I find it so frustrating to code/modify/flash any simple patterns/configuration to test this lib, so I decided to spend some time and make a testbed with an easy to use WebUI. Now on since we have a pretty well destructable object and (almost) all options could be specified run-time or on object creation this makes it even more reasonable to have something more complex than a simple examples. So here is what I came up with - esp32-hub75-testbed project.
It is based on EmbUI framework and let you create and test almost all features of this lib on the fly via simple WebUI interface.
Currently it is just a barely working sketch with tons of bugs and issues but... just need to know if this could be of any use?

Available options:

• Matrix DMA engine setup with most of the run-time features tunable
• Virtual panel setup including orientation
• brightness control
• solid color fill
• gradient fill for 3 colors
• arbitrary straight lines drawing

It could be build with platformio, a proper FS image required.

Known issues:

• double buffer setup leads to crash due to a lib incompatibility
• some unknown WiFi instability once DMA starts
• tons of it actually

An example screenshots

@mrfaptastic @witnessmenow

[witnessmenow]

I think this has the possibility of being really useful, especially if it was combined with the web tools stuff I was looking at, so it would really easy to get a user to install it.

I need to figure out the flashing the filesystem part of the web flash thing, although it should not be too hard

Maybe people would disagree, but I think patterns part is not as useful as the dma part, I think a few pre baked options to display would be all you need

[vortigont]

Indeed this web tools project looks pretty fine for end users. Although the idea of a browser messing with connected devices drives me crazy - flashing, destroying, stealing... whatever you (or 'they'?) like? I've already used a tools like this to reflash Bluetooth device :)
Pre baked patters we do have in a simple examples section - it is fine for quick test if everything is OK, but quite annoying if needed to try-and-error some features. Also it was quite interesting for me to play with gradients with this web controls - it helps to understand how this BCM thing works and it's correlation between refresh rate/panel size/etc...
Another idea - it's a great jump start for any projects involving those panels - one firmware for any panel of any size, all the options you can set via WebIU, etc...