Fingers crossed it'll cut ally

**blackburn mark** · 23-11-2010

try "giant cod"
as cheap as ebay for some stuff

irving's spreadsheet

ill have to have a look for that

im not going to use mine at 1700w, i really cant see me needing that much, im not sure the 360w power supply im using will be enough... we'll have to see how it pans out, it would be interesting to see how it dose at 1700w
it has been a real work horse though and the windings dont get very hot

it'll be interesting watching your workshop lights when you fire up that 6000w job :)

**blackburn mark** · 27-11-2010

Errrr..... has anyone had any experience with wiring home switches to an X axis thats driven with two steppers ?

in mach setup documentation it recomends putting a homing switch on each of the two x-axis drives to correct for lost steps and racking which im getting plenty of as im in the tuning stages of my setup... i only have enough inputs for 3 homing switches and an e-stop on my driver board

how do i conjure up a forth input ???????

**Jonathan** · 27-11-2010

A PCI parallel port card would get you plenty more inputs. There's probably a more elegant way to do it though...
Theoretically 3 inputs is enough if you put the switches in series/parallel etc with each X home switch on separate input - it's a matter of if mach3 can handle it. I'd like to know for my router...

I had a look at giant cod (what an odd sentance!). There's some interesting things but it's still a bit more expensive than www.hobbyking.com. Maybe I could use an E-bike controller on my motor.

**HiltonSteve** · 27-11-2010

Jonathan - Just noticed that your after a 100A 48v motor controller, I have got a few kicking around if you want one.

The ones I have take any voltage from 24 up to 48 and also can cope with anything up to 200A, fully programmable through 3 buttons on the front.

Let me know if you want some more information.

Oh, and I am sure the price will be right!

**Jonathan** · 27-11-2010

Originally Posted by HiltonSteve

Jonathan - Just noticed that your after a 100A 48v motor controller, I have got a few kicking around if you want one.
The ones I have take any voltage from 24 up to 48 and also can cope with anything up to 200A, fully programmable through 3 buttons on the front.
Let me know if you want some more information.

I'm definitely interested - those ratings should make it pretty indestructable! Do you have a datasheet or something for them? Is it sensored or sensorless?

Originally Posted by HiltonSteve

Oh, and I am sure the price will be right!

Hehe, I hope so - just spent £274 on linear bearings and ballscrew so I've not got much money left!

P.S. I vaguely recall you posting about these before..?

PoKeys

That does look good, but very expensive compared to PCI parallel port card on eBay for £3.52.

**M250cnc** · 27-11-2010

Originally Posted by Jonathan

That does look good, but very expensive compared to PCI parallel port card on eBay for £3.52.

Jonathan while it is correct that you can buy cheap PCI Parallel Port cards on Ebay they don't all work with Mach3 some don't have the option of using pins (2-9) for input or output. The PoKeys has dedicated drivers for Mach3 it even has a sub forum on the Mach3 support site.

A bit like comparing a Tata Nano against a Ferrari they both have four wheels, one is a lot more expensive which one would you prefer. ?

Phil

**Wobblybootie** · 27-11-2010

Just a quick question ... Any idea if it works with EMC2??

**blackburn mark** · 28-11-2010

Tata Nano against a Ferrari

think ill go for the nano, i can afford it

iv weighed up all your posts and its all getting a bit rocket science so im going for the simple and cheap option
iv orders a pci ribbon extender and a pci parallel port, i should be able to sneak under my graphics card with that

all that for one more input

**blackburn mark** · 27-11-2010

A PCI parallel port card would get you plenty more inputs.

i was worried someone would say that... my graphics card is blocking all my PCI slots... ill find a way.
im not going down the "series/parrallel" route with switches, homing and soft limits makes the most sense to my eyes

Just noticed that your after a 100A 48v motor controller

might be a winner :)

**M250cnc** · 27-11-2010

Mark i have not used a slaved axis but you can have all limits on one input, then maybe just the slaved axis on a separate input.

To anyone who wants more IO i use a PoKeys device http://www.poscope.com/product.php?pid=3

I have control panel with hardware buttons controlled through this device even does Speed and feed override via pots, MPG's etc

Phil