Base Board hardware

The intended controller is ESP32-class, with Wi-Fi, optional BLE, GPIOs for the shared bus and chain start, and sufficient resources for the chosen coordination workload. Exact model and pin assignment TBD.

Interface	Purpose	Unresolved detail
Power input and distribution	Supply main board and hexes	Regulation, protection, wire sizing
SDA/SCL	Shared hex communication	Bus pins, pull-ups, compatible levels
Chain output	Enable the first hex during enumeration	Pin and activation behavior
Wi-Fi	Game API and web-client connectivity	Local-network arrangement and hosting
Debug/programming	Bring-up and recovery	Connector and tooling

Battery subsystem → switched 5V distribution → main controller supply interface
                                           → H0 ... H6
Main SDA/SCL ───────────────────────────────→ shared hex bus
Main chain GPIO ───────────────────────────→ H0 CHAIN_IN

This is a logical diagram. Verify the selected development board's power input separately from its GPIO levels. The eventual enclosure must provide cable strain relief, switch access, and programming access; its dimensions are not defined.

The shared BOM includes the owned battery, charger, boost converter, switch, and bus pull-ups. Controller cost and purchasing link remain TBD. An Arduino Uno is not a purchase requirement.

See power, Smart Hex wiring, and open questions.