Arduino Distance & RPM Tachometer Module

Overview

This Distance & RPM Tachometer Module is a versatile, hand-held measurement instrument designed for speed tracking and spatial range finding. Housed in a custom casing with a red acrylic faceplate, the module offers visual and digital feedback for prototyping and lab testing. Core Functionality: • Rotational Speed Tracking (RPM): Utilizes an onboard infrared (IR) sensor to detect cycles on rotating assemblies, outputting the calculated value on the LCD screen as "RPM = ". • Ultrasonic Range finding: Features an integrated HC-SR04 ultrasonic sensor to calculate physical distance up to 4 meters, displaying the value as "Distance = ". • Integrated Display: Outfitted with a high-contrast 16x2 character LCD, displaying both measurements simultaneously. • Portable Utility: Built with a 5V rechargeable battery and an onboard rocker switch, allowing the device to be used away from external power sources. It charges easily via a standard 5V Android phone charger. • Data Logging: Supports serial communication, allowing real-time measurement logs to be viewed directly on the Arduino IDE Serial Monitor. Package Includes: • Fully assembled Distance & RPM Tachometer Module • 20-page comprehensive project report, including system circuit diagrams and component configurations.

Key features

• • Simultaneous dual-channel readout (RPM and Distance)
• Non-contact rotational speed calculation via integrated IR sensor
• Acoustic distance measurement up to 4 meters using an HC-SR04 sensor
• High-readability 16x2-character LCD screen
• Rechargeable built-in 5V battery with independent power switch
• Charged via standard 5V Android phone adapters
• Serial data transmission for direct monitoring on a computer
• Includes a 20-page technical project report with full schematics