If using white filament for the Diffuser Screen, printing it on a textured plate will make it scatter more light and be dimmer. Use a smooth plate for best results. A textured plate will work great for clear filament though :)
Very nice idea! I've got some questions though:
1. If you do the math for the max power consumption you'll get: ((16x16)x0,06A)=~15,36A. You said that a 2A PSU is enough, can you confirm that to be the case or did you set a maximum Current in WLED?
2. Do I have to plug the esp32 with usb power all the time? Can't i use the already existing barreljack? Or do you send the power first through the panel and out to the esp32?
3. You should be able to load new sprites and maybe animations through the wled app on any mobile phone right? Maybe share some of your experience please
1. Yes, for most effects ~2amps will suffice... The full 15A are needed if you want to drive all the LEDs full white at max brightness, but that's really never gonna be the case. You can check in WLED/Config/LED Settings the estimated power consuption for the effect you're running. For example "Hyphotic" (all the LEDs on in various colors) uses about 1530mA, while "Fireworks1D" uses only about 430mA. For the 16x16 and 8x32 matrices I'm actually using old USB cables (1.5A) which I cut and connected directly to the LED matrix, and they work perfectly. Do set a max brightness/amps in wled though, to whatever your chosen power supply can handle.
2. No, you'll need the USB only to install WLED. Once the LED matrix is connected to a power supply the ESP will draw power from there. I added a wiring diagram you can check.
3. To add your own images, use the Pixel Magic Tool that comes with WLED -- http://[ip address of your wled]/pxmagic.htm (i.e. http://192.168.0.1/pxmagic.htm) -- more info here: https://github.com/ajotanc/PixelMagicTool. It should be pretty self-explanatory but it will take some experimenting :)
TIP: I had some trouble with transparency with the pxmagic tool from the wled beta (I haven't tried the release version yet) so I got the newest file (pxmagic.htm) from github and uploaded it to my esp (http://[ip address of your wled]/edit), changed its name to avoid confusion with the built-in tool and used that instead. Pxmagic will work locally as well (i.e. you don't need to upload pxmagic.htm to the esp, you can run it on your desktop) but you'll need to give it the esp's ip address.