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Project

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

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Author: Shawon Shahryiar

Last Updated: 2016-05-29

Package Version: 1.0.0.0

Category: Measurement

Downloaded: 940 times

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License: MIT license  

INT0 pin is gated with timer 0. TMR0 starts when INT0 pin is high (start of the echo pulse from HC-SR04) and is read when INT0 pin is low (invoked by the falling edge interrupt caused by the end of echo from HC-SR04). Thus we get pulse width in microseconds. 16 such time samples are taken to make the measurements accurate.

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Download All [41.36KB]

DOWNLOAD LINK RELATED COMPILER CONTAINS
1464499770_hc_sr04_ultrason_mikroc_8051.rar [41.16KB] mikroC PRO for 8051
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

HC-SR04 Ultrasonic Rangefinder Demo

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

Watch on YouTube
HC-SR04 Ultrasonic Sensor

HC-SR04 Ultrasonic Sensor

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

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80xx Development Board

80xx Development Board

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

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Measuring Distance

Measuring Distance

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

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