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What is IR Emitter/Detector Circuit Design about?
1. An IR emitter/detector circuit uses an IR LED and phototransistor pair to generate a signal based on the proximity or reflectance of nearby objects. 2. For the competition, IR pairs are laid out to detect tape paths and junctions to guide the robot. 3. The circuit drives the IR LED with a 40 kHz signal from a 555 timer to avoid interference from ambient light and beacon signals. It filters and amplifies the phototransistor output to provide a clean digital signal for determining if tape is present.
- Author
- D Narciso Sánchez
- Language
- EN