The Screw Terminal Adapter is what you need. It’s something we’ve been asked for a lot, giving people a way to make robust, fast, easy connections that can be changed just as easily.” ...

102mm x 50mm Arduino Nano pinout is designed for GRBL firmware. 3 individual "X-Y-Z" stepper drivers, with a fourth "A" Axis whose step and dir pins can be coupled with either of the other three axes.

All the input/output are on screw terminal (protected by case) arround the case and both (almost) on a 2.54 SIL connector. A sample of arduino program (to be continued) is also included. Boitier (sur ...