GRBL to DB25 CNC Shield Kit With Arduino UNO R3

Name: GRBL to DB25 CNC Shield Kit With Arduino UNO R3
SKU: 8924
Price: 24.95 USD
Availability: InStock
Rating: 4.44 (4 reviews)

(4 Reviews)

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

GRBL to DB25 CNC Shield Kit With Arduino UNO R3 1

GRBL to DB25 CNC Shield Kit With Arduino UNO R3 2

GRBL to DB25 CNC Shield Kit With Arduino UNO R3 3

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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.

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 …

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 did you make it?

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.

What makes it special?

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.

What do you get

You get the PCB, male headers and Female db25 right angle connector. This is a kit, you will need to solder the connectors.

What you will need

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

Does it come pre-programmed?

NO!

Why not?

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.

Why do you bother offering the board, if you won't program it?

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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Review Breakdown

Average Ratings

Product: (4.25)

Documentation: (3.75)

Shipping: (5.00)

Communication: (4.75)

Muhammad | Oct. 6, 2021

Excellent supplier, very prompt communication

Product arrived in time, works well. I am very happy. I recommend this supplier
Muzaffar Iqbal
Toronto
Canada

Marco | Jan. 26, 2020

Works but requires DIY skills

I received the PCB - high quality -, a female DB25 connector and a row of pins, plus an Arduino Uno clone. I think this product could be improved by 1) providing a better Arduino clone (using Atmel serial chip instead of CH340 and with GRBL already flashed); 2) providing a box (I designed one and published it here https://www.thingiverse.com/thing:4129045) ; 3) providing additional components (or at least diagrams) to use additional features of PCB such as monitoring LEDs and resistances and PWM power driver

Response from Ron | Jan. 27, 2020

1. Fair enough.
2. I do have one. https://www.thingiverse.com/thing:1463398 (I will add this to the description and documentation)
If you don't mind, I will link to yours as well.
3. All great ideas.
Thanks for the feedback.

David | Dec. 4, 2018

Board is good, but Arduino is not preprogrammed with GRBL

I would think the whole point of supplying an Arduino would be to supply a board preprogrammed with GRBL. Now I have to take extra time to figure out the world of AVR.

Otherwise customer service and shipping was amazing.

Henk | Feb. 27, 2018

overall a verry good feeling

Great produkt documentation found on the site.
no troubles to get it working
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