Traditional Chinese Acousto-optic guide compass instrument (Workshop Practice) — Circuit, Wiring & Debug Guide
In short: Traditional Chinese Acousto-optic guide compass instrument (Workshop Practice) — Circuit, Wiring & Debug Guide. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 6288 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Sound and light guidance compassThe compass is used to indicate the direction of north and south. It is an indispensable daily and work item for people traveling far away. However, various compasses sold on the market only differ in size and style and have no other functions. The sound and light guidance compass is not only suitable for use by normal people, but also by blind people and deaf-mute people. It can accurately judge the difference between the current direction of travel and the direction of travel, providing a reliable guarantee for people's travel routes.The acousto-optic guide compass is not only suitable for home-made by enthusiasts, but also suitable for production by manufacturers.1. Circuit working principleThe circuit of the sound and light guidance compass is very simple, as shown in Figure 31-1. It is composed of a light-emitting diode, a music integrated circuit and a piezoelectric ceramic buzzer. alt="31-1.jpg (20079 bytes)">Figure 31-2 is an acousto-optic guidance compass composed of discrete components and small-diameter speakers. …
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