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What is Microcontroller Contactless Tachometer about?

This document describes a microcontroller-based contactless tachometer project. The project uses an AT89C51 microcontroller to measure the speed of an AC or DC motor in RPM without using an expensive tachometer. An infrared transmitter and receiver are used to detect when the motor completes a rotation. The microcontroller calculates the speed based on the infrared signals and displays the RPM on an LCD screen. The design provides an inexpensive alternative to commercial tachometers.

Author

nka

Language

EN