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The BIT.SH1001 Smart Traffic Light Theme Expansion Board integrates three 10mm red/yellow/green LEDs for simulating traffic signals, a six‑segment LED running‑light array, a single‑digit display directly connected to I/O pins, a two‑digit display with register, an 8×8 dot‑matrix screen, a 1W audio amplifier (with onboard speaker), and two tactile buttons. When used with BIT.U1 or BIT.S3 development boards, it enables progressive learning from basic LED‑blinking programs to running‑light sequences, countdown timers, button‑based quiz games, electronic dice, rock‑paper‑scissors, music playback, and finally a fully integrated smart traffic‑light project—allowing users to build skills intuitively through hands‑on projects. Designed for use alongside Bit‑Tree’s companion textbook *Project‑Based Creative Programming*, the card features a front panel of black light‑transmitting acrylic and a fully transparent rear acrylic panel for easy observation. It is supplied in an eco‑friendly PP plastic case for storage and protection and includes a detailed product manual with complete specifications and interface descriptions.
