Gerhard Reithofer  wrote:
> Sounds interesting, but how do I controll these shields with a
> raspberry?

Using Arduino firmware like Grbl:
https://github.com/gnea/grbl/wiki
or other G-Code interpreters
https://wiki.shapeoko.com/index.php/G-Code_Interpreters

I've used a TinyG which is a fork of Grbl (and comes with its own Atmega on
the board - but more expensive):
https://github.com/synthetos/TinyG/wiki

You typically connect over a (USB) serial port and send them G-Code for
positioning movements.

Theo

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