Write a simple Arduino Sketch
Using a hall effect rotation sensor, Arduino UNO, 20x4 hitachi LCD
Digital Output 5V signal to rotation sensor
Digital Outputs to LCD
Analog Input [url removed, login to view] signal from hall effect sensor
Take the input from the hall effect sensor and calculate and display values for "Degrees", "Direction", "RPM", "Angular Velocity", and "Angular Acceleration" to the LCD.