LED Floor Log #

2025-01-02 #

Attempts to correct the module layout result in disaster:

• Found XMPlayer 3.1.60 in English which successfully talked to the controller.
• Fetched the config from the system and saved it (controller, display, receiver, export).
• Accidentally hit the “preview” button. This broke the receiver cards on the 12 modules which were connected to the sender at the time. (Garbled output.)
  • Tried power-cycling, the issue persisted.
  • So much for “preview”
• Tried restoring from the saved configs. No luck.
• Panels which were not connected to the sender at the time of “preview” still work fine.
  • Tried again to fetch config from one of those and send to the working modules, but this still fails.
• Tried an older version of XMPlayer but this wouldn’t run on Matt’s Windows laptop
  • Maybe an incompatibility with the newer version?
  • We should try this on a clean machine
• Basil tried brute-forcing the receiver card config from scratch, but this didn’t yield much luck.
• Russ disassembled one of the modules to determine the driver (it’s JXI5020GP, see internals).

Upshot: 12 modules are now in a broken state. We have 4 still-working modules (though two have very broken backshells) which are labelled with a “working config” label.

Hypothesis: there is an incompatibility between the firmware version on the receiver cards and the config sent by XMPlayer 3.1.

Next steps: try and get an older version of XMPlayer working.

2024-12-31 #

Got the floor working for the NYE party. This is the module order we got working:

We used this command to play a video on the screen and unfuck the order of the modules, but this shouldn’t be necessary once we work out how to configure the layout:

ffplay -vf "transpose=1,scale=144:192,setsar=1:1,pad=width=192:height=192:x=0:y=0:color=black,stereo3d=sbsl:abl,pad=width=1600:height=1200:x=0:y=0:color=black" video.mp4