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Introduction: The project digital speedometer throws light on the concept of measuring speed in automobiles or other related equipment and displaying it suitably.
The speed measurement is done with the help of a microcontroller and speed display is done on LCD. The microcontroller used in this project PIC 16F73. It is programmed so as to count interrupts. The interrupt is provided using a comparator.
The output of comparator is controlled by LDR, which is illuminated by a high intensity LED. This arrangement of LED and LDR is placed on the side of wheel or the rotating part, of which speed is measured.
The interrupt generated is counted by the microcontroller and speed is displayed in LCD. This is a simple method of speed measurement.
Please find the following attachments"Digital speedometer seminar report/pdf/ppt download" here.............