SpeedSense - Arduino DC Motor RPM Tachometer

About this project

Build a digital tachometer to measure DC motor rotational speed (RPM) using an IR photogate sensor and Arduino Uno. Count motor shaft rotations via interrupt-based pulse detection and display real-time RPM on a 16x2 LCD. Learn fundamental concepts of speed measurement, mechanical power calculation, and motor performance analysis. Essential for understanding motor control systems, mechanical drive trains, and rotational dynamics in mechanical engineering.

What you get

• Complete, commented source code
• Full components list with quantities
• Pin-by-pin wiring guide and connection table
• Step-by-step upload and testing guide
• Project report (.docx, IEEE style)
• Presentation slides (.pptx)