Thats cool, wish they had that available when I put the manual together... I may need to add a note to the manual that this is an option. How does this breakout board work for boards without pins soldered in?

You still need to solder pins to the board (you can order it that way).

I actually just bought one of these as well as the Arduino din mount. Everything should be DIN mounted in my box except the stepper drivers maybe. I'll share pictures and videos when I get it done. Hopefully, it shouldn't take too long.

I have recently completed the assembly of the AR3 mechanics and am completing the electrical panel these days.

I also belong to the group of supporters of DIN cradles, so I designed one for the Teensy. The cradle and the din mount are mechanically coupled with (2) M2x8 screws, once inserted the board stays perfectly in place, but I have however placed a hole for an M2x3 set screw on the short side of the board at the height of the centre of the SD card slot.

I have attached stl files of the two components here in case they might be useful to the rest of the community.

The model is sized taking into account Z-Ultrat shrinkage, layer 0.19, infill 10%.

Thanks again to Chris for sharing his fantastic work!

Thats awesome. thanks for sharing that.