Fix your cheap eBay CNC router/engraver. This shield and Arduino allows you to use the USB to talk to a db25 based CNC machine.Designed by Ron in United States of America
What is it? The Arduino G25 Shield and included Arduino UNO R3, allows you to connect a CNC via the db25 LPT parallel port. (You will still need to download and load the desired version of GRBL) Why …Read More…
The Arduino G25 Shield and included Arduino UNO R3, allows you to connect a CNC via the db25 LPT parallel port. (You will still need to download and load the desired version of GRBL)
I purchased an inexpensive CNC on eBay. The software they recommended was expensive or was free with limitations and was jittery. Moving the processing of the gcode to the Arduino allows for smoother timing that is not based on cpu cycle count.
Now to run your CNC all you need is a 'G Code Sender'. Something as simple as a terminal window is enough to send g code commands.
You get the PCB, male headers and Female db25 right angle connector. This is a kit, you will need to solder the connectors.
Arduino UNO compatible board USB Cable LPT cable (Female to female like the one that comes with the CNC machine) 'gcode sender application' of your choosing. (If you don't know one, Google it)
This is a video of the CNC router running on the LPT Port. https://www.youtube.com/watch?v=uZJFjWCpabw
This video shows the same CNC running with the shield. https://www.youtube.com/watch?v=dm-AcufNaw0
Link to the pinout and instructions: http://kclinear.com/g25
Because I don't know what cnc system you are using and there are a lot of differences. The good news is that grbl is easy to configure.
Partially a matter of convenience, but this version of the Arduino Uno has the more stable Atmega16u4 for the USB interface and it has the durable USB-B interface. This combination can be tricky to find.
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