This is a rework of the original arduino cnc shield http://blog.protoneer.co.nz/arduino-cnc-shield/
We were trying to make a new low-cost CNC machine for makers and hobbyist.
We found that it is not hard to design a simple aluminum structure with some 3d printed parts, using open software like FreeCAD.
But surprising, there are not many options for electronics part. And we didn’t find any open source shield for Arduino. Maybe we are wrong! But with a quick search, we didn't find anything.
We found one Arduino CNC shield that is being sold on eBay or Aliexpress. But the authors don’t like the idea of Chinese manufacturers making boards without any real collaboration (something that I agree, open hardware is about community). I couldnt find source files for this board.
So, as we decided that it is time to learn KiCad (a real open source software for PCB design), and we decided to make the PCB of this board, using the same pin layout, to get experience with KiCad.
And this is the final result: The SB CNC Shield for Arduino Uno, 100% compatible with GRBL 0.9.
We followed the same philosophy of our popular RAMPS 1.4 SB: Branded components, like the Molex connector, beautiful design with the black PCB and golden finish, and fully tested before shipping.
The main idea behind this shield is that you can make your own functional CNC with a limited budget.
If you are interested in robots, you should make your own CNC machine. There are many problems that are not obvious at first. Motors, drivers, heat, software, belts, backslash.
Even if you want to buy an expensive machine, and you don't have any previous experience with CNC, it is a very good idea to make one by yourself.
SB CNC SHIELD is 100% open hardware. It is designed with KiCad, and you can read the schematics, check the PCB design, learn about electronics, improve it, whatever.
And the most important part with Open Hardware, we can create a community, share experiences, new ideas and fix problems.
This board is 100% compatible with the popular GRBL firmware. You don't need special configurations. Plug and Play.
And there is a huge community behind this project, You can be part of it!
Well, you can go with a complete board. If you are serious about CNC, you should do it. A complete board is autonomous. You don't need a computer to send commands to the machine.
There are some boards open source, with a good community. That is very important if you want good support. But most of them, they are closed source. Or they have a custom firmware.
For example, some integrated boards include the drivers within the board. That could be a problem. Drivers can get hot and it is not difficult to burn one. And in some cases, it is a good idea to use different drivers for each axis.
And they have a higher price. Usually more than $100. If you are making a small CNC, for casual projects, this is a big deal.
To build a complete CNC machine you will need:
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