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[Nr1madman]

Sanitycheck please :D

Have tried my HOMEs now. Signal is high unless any switch is triggered.
This works but should a wire fail Im in trouble as I'm connecting 3 axis paralell to one input?

The slaved axis with separate input is safe because I would notice a broken wire?

Confusion. ...

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[Desertboy]

Sanitycheck please :D

Have tried my HOMEs now. Signal is high unless any switch is triggered.
This works but should a wire fail Im in trouble as I'm connecting 3 axis paralell to one input?

The slaved axis with separate input is safe because I would notice a broken wire?

Confusion. ...

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Relay(s) to turn your NO to NC would do the trick with an added layer of complexity or order NC sensors from china and slum it for a few weeks with the ones you have.

3rd option run as is probably be fine lol.

[Nr1madman]

Relay(s) to turn your NO to NC would do the trick with an added layer of complexity or order NC sensors from china and slum it for a few weeks with the ones you have.

3rd option run as is probably be fine lol.

I know that if I start running with this it will never get changed :D
Limits will go through relays but I've read that homes should get connected without relays or logic circuits to get the best repeatability? :)

I feel so close now!!

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[Desertboy]

I know that if I start running with this it will never get changed :D
Limits will go through relays but I've read that homes should get connected without relays or logic circuits to get the best repeatability? :)

I feel so close now!!

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I think if you use Solid state relays it's not an issue as they switch a lot quicker.

But just buy new switches is the proper solution and obviously what you're thinking, you can still play without home switches.

https://www.aliexpress.com/item/5pcs...724076488.html

Aren't these the same switches but NC?

[Nr1madman]

I think if you use Solid state relays it's not an issue as they switch a lot quicker.

But just buy new switches is the proper solution and obviously what you're thinking, you can still play without home switches.

https://www.aliexpress.com/item/5pcs...724076488.html

Aren't these the same switches but NC?

I guess you are right!
Im so sick of soldering and shrinktubes and that crap.. hoped I was done :D
Swedish post has introduced a new fee for packages that come from outside of eu.. so ordering from China will get expensive from now on.
Except for VAT there will be an extra charge for every package. Think the smallest charge was around 7£.. This takes away the freedom of just shopping cheap stuff.

Anyway :D
Will have a play tomorrow and try to make sense of pulses/mm.
Had it at 160 at the moment but didn't seem quite right.


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[Neale]

Relays would work - but if you are worried about broken wires, loose connections, etc, then you need a separate relay at every location where there is a switch. Not a practical way forwards, even more wiring needed, and will cost more than replacing the switches! The only real answer is NC switches, wired in series. This is particularly important for limit switches as you really do want these to function reliably, but I'm not sure if you are using combined home/limit switches. If these are just for homing and you have separate limit switches (NC, I hope), then the home switches are not safety-critical and you probably won't actually break anything if something in the home switch circuits fails.

[JAZZCNC]

Have tried my HOMEs now. Signal is high unless any switch is triggered.
This works but should a wire fail Im in trouble as I'm connecting 3 axis paralell to one input?

The slaved axis with separate input is safe because I would notice a broken wire?

If Just home switches then don't worry about it because if one fails the Limits will catch it.

[Nr1madman]

Relays would work - but if you are worried about broken wires, loose connections, etc, then you need a separate relay at every location where there is a switch. Not a practical way forwards, even more wiring needed, and will cost more than replacing the switches! The only real answer is NC switches, wired in series. This is particularly important for limit switches as you really do want these to function reliably, but I'm not sure if you are using combined home/limit switches. If these are just for homing and you have separate limit switches (NC, I hope), then the home switches are not safety-critical and you probably won't actually break anything if something in the home switch circuits fails.

Thanks!
Not using combined home/limits!
Went with mechanical switches for limits and they are no/nc.. so it might be ok :)

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[Nr1madman]

If Just home switches then don't worry about it because if one fails the Limits will catch it.

I'm comforted now... thanks ;)

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[Neale]

I'm comforted now... thanks ;)

...as long as you use the NC contacts for the limit switches! Simplifies wiring as well as they can all be in series taken to a single BOB/motion controller input pin. I use proximity switches myself; mine are arranged in pairs (min/max limits on each axis) and wired in "series". Doing that is slightly more complicated than with mechanical switches but it works fine. I tested them with 4 in series (remembering that I also use 24V) and they seemed to work OK as well.