Wi-Fi Modular Round TFT Grid

I already have a batch of 2.1-inch round 360 × 360 GC9B72 TFT panels from goldenmorninglcd.com and now need the electronics and software ecosystem that turns them into a re-configurable display wall. Think 3 × 3, 4 × 4, 5 × 5, 6 × 6—or even larger—matrices where each module clicks together, powers up, and appears as one continuous canvas.

Hardware
• Design a compact PCB for each display that carries its own driver, power conditioning and a Wi-Fi-enabled microcontroller so every tile can auto-discover its neighbours.
• Provide an edge connector or other simple bus so power and data can daisy-chain when the tiles are slotted into a frame.
• Supply full schematics, BOM and Gerber files, plus a reference back-plane/controller if you feel a master node will simplify things. Production ready from jlcpcb.com

Firmware
• Over-the-air-updatable code that joins a local Wi-Fi network, registers the tile’s position and listens for frame-buffer data.
• Smart addressing so the same firmware runs on every module regardless of its spot in the grid.
• Smooth rendering of static patterns, animations and an always-on clock pushed from the web app.

Web-browser App (primary user interface)
The app must run in any modern browser—desktop, tablet or phone—without installing native iOS/Android packages for now. Inside the app I need to:
1. Create, edit and save colourful dot patterns, exactly like interactive spot paintings.
2. Trigger a dynamic clock mode that can be customised with different colour schemes or backgrounds.
3. Push content live to the grid and preview it instantly.
4. Manage multiple layouts so I can swap a 4 × 4 artwork to a 6 × 6 without rewriting code.

Deliverables
• Tile and (if required) master-board PCB design files (schematic, layout, Gerbers, pick-and-place, 3-D).
• Fully documented firmware source and compiled binaries.
• Browser-based app with clean, commented HTML/CSS/JavaScript and a lightweight backend only if absolutely necessary.
• Setup guide covering assembly, flashing, network configuration and content upload.
• A short demo video or GIF proving a multi-tile array running both pattern and clock modes.

Acceptance criteria
• Any number of tiles up to at least 36 auto-map correctly after power-on.
• Latency low enough that the clock’s seconds hand or colour transitions remain visually smooth.
• Pattern editor responds in real time and matches what appears on the physical grid.
• All files build and run using open-source toolchains (KiCad preferred for PCB, PlatformIO/Arduino-CLI or similar for firmware).

With this complete system I can ship Gerbers to my PCB house, assemble the modules, open a browser and start painting with light on a wall of round displays—no extra coding required.