Tachometer (RPM Monitor)

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Original price was: 9,999.00₹.Current price is: 2,999.00₹.

Tachometer (RPM Monitor) employs Arduino NANO and IR sensors to measure machinery RPM, displaying results on a 16×2 LCD, with features like relay control, LED, and buzzer for threshold alerts, suitable for automotive, manufacturing, agriculture, and laboratory applications, ensuring accurate RPM monitoring and maintenance.

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Tachometer (RPM Monitor), a versatile tool designed for measuring and displaying the rotational speed of machinery and motors. This device utilizes infrared sensors and an Arduino NANO microcontroller to provide accurate RPM readings on a 16×2 LCD display, making it ideal for various industrial and automotive applications.


  • Utilizes Arduino NANO Microcontroller and IR sensors for precise RPM monitoring of machinery and motors.
  • Features a 16×2 LCD display for clear and easy-to-read RPM readings.
  • Incorporates a potentiometer and switch for manual adjustment and control of display settings.
  • Equipped with a 7805 voltage regulator for stable power supply to the system.
  • Includes a relay for controlling external devices based on RPM thresholds.
  • Utilizes a soldering iron, soldering wire, zero PCB, and connecting wires for circuit assembly and integration.
  • Features an LED light and buzzer for visual and audible indication of system status.
  • Comes with a resistor for voltage regulation and component protection.
  • Powered by a rechargeable battery for portable use in various environments.
  • Includes a DC gear motor for testing and calibrating RPM measurements.


  • Arduino NANO Microcontroller
  • IR Sensors
  • 16×2 LCD Display
  • Potentiometer
  • Switch
  • 7805 Voltage Regulator
  • Relay
  • Soldering Iron
  • Soldering Wire
  • Zero PCB
  • Connecting Wire
  • LED Light
  • Buzzer
  • Resistor
  • Rechargeable Battery
  • DC Gear Motor


  1. The Arduino NANO Microcontroller reads signals from the IR sensors to detect the passage of reflective surfaces on rotating machinery.
  2. Based on the time intervals between reflective surface passages, the microcontroller calculates the RPM of the machinery or motor.
  3. RPM readings are displayed in real-time on the 16×2 LCD display, providing users with accurate rotational speed information.
  4. Users can manually adjust display settings using the potentiometer and switch, allowing for customization of RPM display preferences.
  5. The 7805 voltage regulator ensures stable power supply to all components, preventing voltage fluctuations and ensuring reliable operation.
  6. The relay can be programmed to trigger external devices, such as alarms or shutdown mechanisms, based on predefined RPM thresholds.
  7. Visual and audible indicators, such as the LED light and buzzer, provide feedback on system status and RPM thresholds.
  8. Components like the resistor and rechargeable battery contribute to voltage regulation, component protection, and portable operation.
  9. The DC gear motor can be used for testing and calibrating RPM measurements, ensuring accuracy and reliability of the tachometer.


  • Automotive Industry: Used for measuring engine RPM in vehicles during diagnostic testing and tuning.
  • Manufacturing: Monitors the rotational speed of machinery and conveyor belts in manufacturing plants to ensure optimal performance and productivity.
  • Agriculture: Measures the RPM of tractor engines and agricultural equipment for maintenance and efficiency monitoring.
  • Laboratory Research: Utilized in research laboratories to monitor the rotational speed of centrifuges and other laboratory equipment for scientific experiments.