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I've mounted two optical homing switches for both X and A (Slaved to X) for my gantry and when it homes it squares up reasonably well but is off by about .9mm. I would like to make this exact...

Thanks Gerry, Do they do individual orders? They look more like an industry supplier

Does anyone know where I can get Stainless steel v groove bearings? Any size will do.........

I live near the ocean and even though my machine is in my shed under covers the salt still gets to it...

No, i unplugged the new wiring and it doesn't work as it did

I wired up my optical limit switches exactly the same as Simon C....... No my motors have stopped working..... The switches work in the diagnostic screen perfectly but it's too much of a coincidence...

Okay - so I tried the above and it does work in the diagnostics page - M1 home switch goes hi when activated and low when not.

Only problem is now my motors won't turn at all. Nothing works -...

Perfect thats what I couldn't figure out. Thank you very much for your help

Thanks to Bob and Alan as well

BR Tech - Your logic gates look interesting.

I'm happy to gang all my optical switches the one input as these will be my home switches. My limit switches are all standard DPDT limit switches. ...

Its these ones

6xOPTICAL Photo Gate LIMIT Switch OPTOCOUPLER CNC micro (eBay item 330572941945 end time 11-Jun-11 16:55:10 AEST) : Industrial

http://users.tpg.com.au/adslwvgv/hoa6990.pdf

I have managed to power the optical limit switch from a USB port. My issue now is that there is one wire which produces a 3.5ish Volt signal when the switch is closed. I have a G540 and it seems...

I am planning on running a 5V power source from a USB source to power my optical limit switches. Only problem is it seems that USB ports are supply and demand as I've got 5V coming off it but no...

I've got these Optical Limit switches which need 4.5V-7V and no more than 50mA.

I'm thinking of harnessing the power of a USB port for this, being that a USB port is normally 4.75-5.25V and around...

It seems I've sorted it although I'm having an issue with my Z axis now. The default distance that the "Homing" moves back off the switch is not enough for the switch to be deactivated. I know that...

I've got Mach 3 sorted except for the limit switches.

I've got 6 limit switches - 1 for each end of each of the 3 axis' all wired up normally closed. 3 of those switches at the -- end I've got...

No just at the G540 end

I know that this question has been answered numerous times but I always find it a little bit cryptic and whilst I believe that I understand the theory behind it I'm wondering if someone can give me a...

Sorry to Highjack your thread but when you say ground to the same spot on the cabinet I'm not sure I am understanding you.

When I ground a gas line I drive a 3 foot steel stake into the ground and...

Yep :(

G540
Nema 23's 3.5A
48V PSU

I have a lot of noise when the motors are stationary. I have wired them as recommended in the G540 manual with pins 1 -5 with 3.5K resistors and pins 2,3,4 to the...

Thanks very much guys.

I appreciate all of your help

Okay good call. So there is no issue that you know of using 1/2W resistors electronically just the fact that they are bigger and harder to use from a physical perspective?

I can't find a 3.5K 1/4W resistor. The closest I can get is a 1/2W 3.6K resistor. Would this be acceptable? Or should I scour eBay?

Thanks very much CarveOne.

One more question for you if you don't mind - I'm reading the Mach 3 manual and other sites but for some reason I can't figure out how to jog the motors at a constant...

I have a couple of issues now that my machine is built and trying to get it up and running properly.

I am running a G540 with a 48V DC PSU. I have Nema 23's 387 oz-in which are rated to 3.5Amps. ...

Never mind - had an ahhhhh moment and I'd forgotten to disable the limit switches as I haven't wired them up yet
:withstupi

I have just connected my motors to my G540 and they have holding torque but they are emitting a high pitched buzzing noise. I have very limited understanding of Mach 3 so am trying to piece my way...

Dyson Motor 104,000 RPM

Could even ratio it up to get more torque......

I have an old Plunge Router that has speed control in it. I also have a new Trim router that I want to use on my cnc which doesn't have variable speed control. Would it be that hard to pull the...

I've found a collet that I want to purchase but I'm struggling matching up high speed Bearings to it.

It is 16mm and all I can find are 15mm and 17mm inner diameter high speed bearings.

Anyone...

I don't know, to me it seems simpler to just make a spindle and will cost about the same (New Trim Router + additional Wood + Soundproofing). I've got an old plunge router that I think I'm going to...