Glossary

Term	Meaning
Smart Hex	Local MCU, sensors, OLED, and interfaces serving one hex location
Base Board	Main controller and board-wide power, mapping, and coordination component
Playable Pieces	Passive roads, settlements, cities, robber, and land tiles
Display Unit	Raspberry Pi and screen presenting the public web application
Mobile Web App	Private player controller on an existing phone
Sensor ownership	Assignment of each sensed physical position to exactly one local sensor
Global road	Board-wide road-position ID independent of hex wiring
Global intersection	Board-wide building-position ID independent of local sensor numbering
Resistor ID	Identity inferred from a piece's passive resistor and accepted measurement range
Reference resistor	Known divider resistor on the sensing side, currently 10kΩ in the concept
ADC	Analog-to-digital converter measuring a voltage as a digital reading
Debounce	Filtering contact transitions until a stable state is observed
Calibration	Measuring known pieces to establish useful classification ranges
Chain enumeration	Sequentially identifying hexes through directed CHAIN eligibility signals
Runtime address	I²C address assigned to a hex during startup, distinct from its global board positions
I²C	Shared clock/data communication bus using SCL and SDA
Local OLED bus	Separate connection between a hex MCU and its own display
Physical board state	What the hardware observes, including unknown or unavailable positions
Game state	Authoritative rules-level state, including resources, turn, and expected pieces
Reconciliation	Comparison of expected game layout against physical observations
Board event	Stable physical observation expressed using global positions
Domain event	Accepted game-level outcome produced by rules processing
Hex Manager	Main-controller subsystem responsible for device communication and lifecycle
Semantic display command	Instruction such as set number or highlight, leaving pixel rendering to the hex
Bootloader	Small program responsible for entering or starting application firmware and potentially updating it
IAP	In-application programming; the eventual firmware-update mechanism still needs investigation
CRC	Cyclic redundancy check, used to detect accidental data corruption
BOM	Bill of materials listing parts and quantities
Kiosk mode	Browser setup focused on displaying one application on the public screen

See system architecture for these terms in context.