Stepper Motor Controller Without Arduino or Microcontrollers

Watch video about this project: https://youtu.be/HdTU3Mj1Ejs

This is the curcuit:

Components

Motor I've used: https://s.click.aliexpress.com/e/_d84I07S

PCB 4X6: https://s.click.aliexpress.com/e/_d65i2Sg

PCB 6X8: https://s.click.aliexpress.com/e/_d7XpQnS

DVR8825 stepper motor driver: https://s.click.aliexpress.com/e/_Anmk61

SN74HC14N: https://s.click.aliexpress.com/e/_A5CxRn

LM7805: https://s.click.aliexpress.com/e/_AVukJx

Switch: https://s.click.aliexpress.com/e/_Apb1l7

50k Potentiometer: https://s.click.aliexpress.com/e/_AgNoGN

Pin Header: https://s.click.aliexpress.com/e/_DdOig6l

Female PCB Header: https://s.click.aliexpress.com/e/_DDBKykp

Electrolytic Capacitors: https://s.click.aliexpress.com/e/_A2atvx

Ceramic Capacitors: https://s.click.aliexpress.com/e/_ABg3GZ

Resistors: https://s.click.aliexpress.com/e/_9AslPB