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I'm not really understanding how I can combine the X and Z axis switches. I thought possibly you meant using a NC switch on one and NO on the other but I still couldn't think of a homing sequence...

Now this is interesting. I might have to do a little reading. I think you are right. I can set the same pin for both. The difference will be the direction of movement for each action. I'd need to...

All the limit switches are in series with the E-Stop. so only one input for all the limits. Each axis only has one homing sensor. I guess where my setup is a little less common is I have 2 screws and...

Do you have a video of your router moving? I'd like to see what speed you are talking about.

I must say after all above. I'm not saying 5 is better than 10. Just it's not as big of a deal as many make out. And as others have said, you want 1.8m and my example is only 1m. Whip will become...

https://youtu.be/ZCORFRJfjdE

Yep. Currently set at 700mm/second squared for acceleration and 100mm/sec for velocity.

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Just making a video of what that looks like.

I'll have to check what I have them set at. I have them backed off as it was capable of far too fast for my liking.

I'm glade you've done the math because I have done the practice. LOL. Don't...

I have 5mm screws as they can be found much cheaper. I have no trouble at all with speed at 1m long.

I just bought these: 5Pcs New LJ12A3-4-Z/BX Inductive Proximity Sensor Switch NPN NO DC6V-36V | eBay

Should fix my problem.

Thanks for all the help guys. If it was as simple as I thought with...

Thanks John.

Just what I need but complicated looking. I don't know how I can make that neat in my box. I have a few transistors here that I might try to set up temporarily then order some NPN...

Hey Al,

I found this post from you on another thread here: http://www.cnczone.com/forums/general-cnc-machine-related-electronics/244472-connecting-pnp-inductive-proximity-sensors-bob.html

So...

I should have paid more attention to this post.

Or maybe I just didn't understand it then. Yes, so I think I have a sourcing type BOB. So not sure how to get this to work with PNP sensor.

Yep so confirmed again. Putting the common ground on the input is seen in LinuxCNC.

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I'm also searching around for the answer.

Like here :http://www.cnczone.com/forums/diy-cnc-router-table-machines/344004-wiring-npn-inductive-proximity-switches.html

So I wired up a spare senor as pictured. 12v from the BOB 12v, senor wire directly to the input and it doesn't work.

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I'm guessing some resistors are going to be needed.

Can you elaborate on Sinking type?

Won't putting a resistor between GND and the input be enough for the input to see a signal?

This is the BOB.

https://warp9td.com/images/BOB_Vendors/StepperOnline/ST-V2.pdf

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This is the BOB.

https://warp9td.com/images/BOB_Vendors/StepperOnline/ST-V2.pdf

Yes, I believe it does have photocouplers on the inputs.

So I've bought these http://www.ebay.com.au/itm/5Pcs-PNP-NC-LJ12A3-4-Z-AY-Inductive-Proximity-Sensor-Switch-DC6V-36V-AU/182572243815?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

I...

Are you using a dedicated pc?

Ditch Mach3 and get LinuxCNC.

Where are you?

I don't know how popular servos are? From what I've read they aren't all that popular.

Comparing a second hand PC for $25 and a parallel break out board for $12 (or close to, can't remember). I...

Thanks for the info guys. It gives me somewhere to start looking. I'm using LimuxCNC. It seems Mesa boards are hugely popular with Linux but also cost. Apart from one extra input, I don't know why...

Hey guys,

I've run out of inputs for my Parallel Port break out board. 3 axis with 2 motors and sensors on one axis (4 inputs), E-Stop and I'm out. I only want one more for tool touch off sensor....

Thanks mate, I'll have a look. I thought that was just for how it initially entered the material.

This might be a bit of a random question guys but here goes.

Does anyone know of a way to helically step down a cutting process. Currently my router follows the shape, steps down the desired...

Thanks mate.

Goes Ok.

I reckon it's still about 3 weeks off being finished yet but it's up and running


https://www.youtube.com/watch?v=_Z9sOJ_4Gko

By crank I mean screw them really hard. I just used the long side of the allen key to what I thought was tight. If I replace the loose bearings, I'll be looking for some quality. They seem to be the...