routercnc_MK3

[routercnc]

Irving,
Thanks for the info. Yes, by 'other bits' I was referring to additional resistors to limit the current. It's not clear from the description but as this appears to be a module I think they must already be there. Thank you for the general explanation, that clears up the areas I was thinking about.
As for adding complexity etc. my main reason for looking into this was to reduce or eliminate false e-stops on the limit circuit. The homes and probe would be direct to the BoB as before. It is only the limits I was considering going to 24v via a relay. I think that is where the benefit will be - but when the new driver and BoB system has arrived I'll try it all direct to the BoB and see what happens.

Jazz, thankyou that confirms how I thought this would all operate. And yes, good point about no probe on a relay.
The reason I looked at a module system mounted to a board was to have simple wire connections. I had looked at automotive relays as these use standard spade terminals and had a mounting bracket, but then wondered about current resistors and diode spike protection and whether this was inside the relay box or not. Basically I don't want to have to build a PCB circuit board for this, just spade or terminal blocks onto something which works. So would the automotive type be OK?
I also looked at solid state relays but will avoid on that advice. I quite like hearing a click anyway to confirm all is well.

Eddy,
Thank you, I did look at that as well but it talked about PIC and Arduino and I didn't know what to make of it. But the diagram makes sense so thanks for posting that. I've decided to try out the BoB all direct and see what happens. If there is just one false e-stop I will add something like that - should be straight forward and there is plenty of space in the new control box I have planned out.

Thanks