DIY 3020 CNC I/O Board

[Pointy]

Les, Just explain what happens when you hit the emergency stop button, I don't mean the flip flop changing state, LED's and input to OK1A, I mean after that.
If you notice, things like stepper motors, limit switches, spindle to some extent, are all wired in more or less the same way so it's the emergency stop circuit that interests me.
Correct me if I'm wrong but you are using Mach3 on this job ?

Yes I am using Mach3, the Estop switch just pulls pin 10 low. That's all it did on the original board/switch. I just added the flip flop. Mach3 detects the low and stops everything, there is no hardware emergency stop if that's what you mean.

Regards,

Les

[EddyCurrent]

I changed my post but you have the original text, I thought afterwards I was jumping the gun when you were really asking about this board only.
It's a matter of scale probably, it's a 3020 after all so is there going to be a real emergency ? I don't know, what do you think ?