Raspberry Pi powered cnc.

thingiverse

I use a Raspberry Pi to run an Arduino Uno with CNC Shield to operate my 40x40mm Root2 CNC machine, https://www.thingiverse.com/thing:2286040. The Raspberry Pi is configured to run as a headless computer in Client and AP mode simultaneously, allowing me to log on directly to the Pi through its AP. It's such a compact solution that I decided to mount as much as practical directly to the gantry side plate to minimize stepper motor cables. I printed the IP address 192.168.2.1, which is the AP IP for VNC Viewer, on the top section. I also made room for an end stop low pass filter according to this guide: https://github.com/gnea/grbl/wiki/Wiring-Limit-Switches. In the bottom section, I left space for six end stops, an auto level probe, and a soft E-stop. I also included cable spaces in the mid section for four stepper motor cables and a power cable. A 60mm fan is mounted in the top section to cool the stepper drivers. All three sections are bolted together with four 40mm SHCSs and plain nuts. The external mounts are designed to fit the side plates of the 40x40 Root2 CNC machine. I printed it all in PLA with three perimeters, 25% infill, and support on the mid section.