Adding outputs for external state signals about grbl-mega HOT 1 OPEN

Yes it can....but is more usefull for standalone Maschine....
grbl need a streaming Software like Candle, and this software can show state or error from grbl...so is really needed ?

For external alarm... what about just use a limit pin? This stop grbl too. If u want, give signal on 2 or all 3 limit, so u can see in controling Software, this is one external alarm and not missing steps. Or just use the feed hold input for only stop the router

I wish more one output pin, witch show the state of laser mode flag. I start with a cheap china 3020 router, witch have now some extras. One is a laser modul with 15W puls, mounted on the spindle clamp - is was to much work to replace spindle with laser every time.

At this moment is the change of electric signal and power is done with a manual switch. But with one signal LASERMODE, i can easy send pwm to spindle or to laser and power down the unused part.

I think, is saver and better to switch from grbl, there is the right info about the mode. But i afraid...dual router with laser and spindle may not so common.

from grbl-mega.