“Rotary encoders are great for use in microcontroller projects as an input device but their performance is not very smooth and satisfactory. Also, having a lot of spare stepper motors around, I decided to give them a purpose. So if have some stepper motors lying around and want to make something, get the supplies and let’s get started!
For this project, you will need:
A stepper motor(Unipolar or bipolar).
An LM358P op-amp chip.
A 1k Ohm resistor.
2x 100k Ohm resistors.
2x 4.7k Ohm resistors.
2x 47k Ohm resistors.
An LED.
Connecting wires.
Optional components:
2x LEDs
2x 330 Ohm resistors”