The first problem I had with it though was the CNC Controller being Parallel port. I could've sworn I had a PC laying around that had Windows XP and a Parallel port, but I was wrong. Wanting to get this Router up and running I decided to look into a USB to Parallel bridge via an Arduino UNO I had laying around.
After doing some research I came accross GRBL (https://github.com/grbl/grbl). This opensource firmware for the Arduino will take G code via USB Serial and output the corresponding step/direction signals to a Stepper controller.
I had a female parallel port connector in a bin and straightened out pins 2-7 and just inserted them into the arduino digital pins 2-7. I then connected Pin 25 to GND on the Arduino.
I then downloaded and modified the GRBL source code (pin_map.h) to reflect the YOOCNC pinout to the DB-25 connector.
If you would like to donate to my projects fund, my paypal is: firstname.lastname@example.org All donations will contribute to open source efforts and documentation to make others lives easier. It's a pain trailblazing a new or dirty path, especially with limited funds...#define STEPPING_DDR DDRD#define STEPPING_PORT PORTD#define X_STEP_BIT 2 // Uno Digital Pin 2#define Y_STEP_BIT 4 // Uno Digital Pin 4#define Z_STEP_BIT 6 // Uno Digital Pin 6#define X_DIRECTION_BIT 3 // Uno Digital Pin 3#define Y_DIRECTION_BIT 5 // Uno Digital Pin 5#define Z_DIRECTION_BIT 7 // Uno Digital Pin 7Recompiled. Loaded into the Arduino... And within 20 minutes had my Chinese CNC uphttps://github.com/winder/Universal-G-Code-Sender
and running using a USB port and Gcode sender.