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ECE319H Final Project.\n\n---\n\n## Highlights\n\n**Comparator + FET Input Detection** — Puck sensing uses a custom analog comparator circuit driving an N-channel FET, with hardware debouncing and firmware-level input validation. Fast, noise-resistant, and doesn't rely on polling.\n\n**Custom DAC + Audio** — Sound effects generated through an R-2R resistor ladder DAC feeding a discrete amplifier and speaker.\n\n**SPI Display Pipeline** — ST7735 TFT screen handles all game state rendering and animations via SPI. Score output runs in parallel on 7-segment displays driven by 74HC595 shift registers.\n\n**Game Loop \u0026 State Machine** — Fully interrupt-driven architecture managing turn logic, collision validation, and score tracking in real time. All rendering, input, and audio synchronized to a 60 FPS Timer12 interrupt — no RTOS, no scheduler.\n\n**Mixed-Signal PCB** — Custom board with split digital/analog ground planes, decoupling for stable SPI, and an integrated comparator/FET sensing front-end alongside the DAC output stage.\n\n---\n\n## Stack\n\n| Layer | Tech |\n|---|---|\n| MCU | TM4C123GXL (ARM Cortex-M4) |\n| Language | C/C++, bare-metal |\n| Display | ST7735 TFT over SPI |\n| Score Display | 7-segment + 74HC595 shift registers |\n| Audio | R-2R DAC + speaker amp |\n| Input | Analog comparator + N-FET + hardware debounce |\n\n---\n\nDeveloped for **ECE319H — Introduction to Embedded Systems (Honors)** at The University of Texas at Austin.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frbala25%2Fshuffleboard","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frbala25%2Fshuffleboard","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frbala25%2Fshuffleboard/lists"}