Participate in Chongqing "Holtek Cup" college microcontroller design contest, design multifunctional smart guide cane-based ultrasonic ranging. HT46R24 lead to blindness as the core, with automatic ultrasonic sensors detect obstacles, and vibration are two ways to use voice prompts blind barrier. Also with real-time clock voice broadcast, the whole point timekeeping, alarm clock, etc., have been the keys to manually adjust the time, alarm and other user-friendly features.

daomangzhang.c

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