Which Type of Limit Switch

[manofgresley]

Hi Eddy. I'm confused, why do i need a separate 5 volt psu, when my BoB is already putting out 5 volt. On the board there are terminals for 5 limits but only two wire each, + & -, Am i reading it wrong or what?

Ray

This is the drawing. You will have to make sure the 0v terminals of both power supplies are connected together otherwise it will not work. Where it shows a 24v dc PSU you could use a 12V dc PSU instead if desired.
Colours of the proximity switch wires are for the ones I used but I think they are pretty standard.
Because these are home switches I was not overly concerned about N/O, N/C, so for example mine are 'off' and 'open' until they are activated whereupon they are 'on' and 'closed'. If you get yours wired up and they operate the wrong way you thought they would you can just 'invert' their operation in the software.

[Clive S]

Hi Eddy. I'm confused, why do i need a separate 5 volt psu, when my BoB is already putting out 5 volt. On the board there are terminals for 5 limits but only two wire each, + & -, Am i reading it wrong or what?

Ray

I don't know your BOB but you have to power it from somewhere I and others are assuming it is powered from a 5V source if it is powered from 12V then you can use that to drive your sensors.
Can you confirm what the BOB is powered from? ..Clive

[manofgresley]

My BoB is powered by a seperate Transformer which has a duel out put of 5 v0lt and 36 volt

I don't know your BOB but you have to power it from somewhere I and others are assuming it is powered from a 5V source if it is powered from 12V then you can use that to drive your sensors.
Can you confirm what the BOB is powered from? ..Clive

[cropwell]

That BoB, I believe is powered either from the USB lead or a separate 5v input. There will be a switch on the board or a jumper to select which. The BoB doesn't put 5v out AFAIK.

[manofgresley]

You are correct, it is powered by a seperat Transformer, does this mean i can use sensors with higher than 5 volt?

Ray

That BoB, I believe is powered either from the USB lead or a separate 5v input. There will be a switch on the board or a jumper to select which. The BoB doesn't put 5v out AFAIK.