Summary of Fidget Spinner RPM Counter
This project describes building a Fidget Spinner RPM Counter (Arduino Tachometer) using a Hall-Effect Sensor (A3144) to measure the rotational speed of a fidget spinner. A neodymium magnet is attached to the spinner, triggering the sensor once per revolution. The Arduino Uno processes signals to display current and maximum RPM on an LCD 1602 screen, along with a tachometer bar. An LED indicates magnetic field detection. The project warns against using certain Hall-Effect sensor modules due to false readings and suggests connecting the A3144 sensor directly to Arduino pin 2 for accurate results.
Parts used in the Fidget Spinner RPM Counter:
- Fidget Spinner
- Neodymium magnet
- Arduino Uno
- LED
- 220 Ohm resistor
- Hall-Effect Sensor A3144
- 10 k resistor
- Wires
- Breadboard
- LCD 1602
Hi everyone! This is my next project, Fidget Spinner RPM Counter or Arduino Tachometer with Hall-Effect Sensor.
1: Requirements
Parts Required:
- Fidget Spinner
- neodyimium magnet
- Arduino Uno
- LED + resistor 220 Ohm
- Hall-Effect Sensor – a3144
- resistor 10 k
- Wires
- Breadboard
- LCD 1602
2: Hall-Effect Sensor
Using Hall-Effect Sensor we can measure the speed of rotation. I used Hall-Effect Sensor – a3144.
RPM (Revolutions per minute) – the number of revolutions per minute. Revolutions per minute – a unit of measurement of rotational speed: the number of complete rotations made by the body (fidget spinner, wheel etc.) around a fixed axis. Used to describe the speed of rotation of the mechanical components in the mechanisms and machines.
3: How does it work?
To measure the speed of rotation on the Fidget Spinner must be mounted a part of neodyimium magnet that affect the Hall sensor after each complete turn of the Spinner.
4: Indication
The presence of a magnetic field is indicated on the LED.
LCD 1602 indicates current RPM, maximum RPM and tachometr bar (from 0 up to 1260rpm). 1260 rpm is my personal record.
Also you can use Arduino IDE serial port.
5: Notes
I used a Hall-Effect Sensor A3144 and it worked well just connected to the pin 2 of Arduino Uno board. Also I tried to use a Hall-Effect Arduino module just like this one and it worked very bad.
I recommend not using this module bacause of false harmonics.
Thank you all! Please, write in comments about your Fidget Spinner RPMs!
For more detail: Fidget Spinner RPM Counter
