Arduino says that 5v can be connected to the Vin pin, but that real voltage would probably be less.
The way it behave now is a bit strange: at first power up, the board doesn’t “wake up”: the led doesn’t heartbeat. But if I cut power for a few seconds, then setting it again, the board starts with heartbeat (and motor idling for a second). It’ like as if a capacitor needs to empty, and powers the board during it, making the new power-up like a reset. Of course it needs to be unplugged from the computer, or it just doesn’t stop.
So, it’s not exactly what I needed, but that way I can turn the CNC on and control it without openning the lid, and without setting an external reset button. But maybe I’ll make one either.
PS: It’s out of sight, but I got my first jobs running, and it’s really nice! 🙂
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