Messages

5571

General Mach Discussion / Re: halfmoon instead of circle

« on: April 28, 2011, 08:58:10 AM »

Just looking at your photo's again - that LPT cable looks very small diameter so must be very small wires, try another cable and make sure that the shield / 25 way connector outer metal part does not connect to your machine ground. (this cable screen is connected to earth at the PC end)

Tweakie.

5572

General Mach Discussion / Re: halfmoon instead of circle

« on: April 28, 2011, 08:51:51 AM »

May be an idea at this stage to just try another PC, just in case it is your PC which is at fault.

Tweakie.

5573

General Mach Discussion / Re: circular interpolation not showing on arc cutting surface

« on: April 28, 2011, 06:56:36 AM »

Sorry but I have never seen another one of these.

(It is 240 volt 3 phase, has internal shaft brushes to connect rotor to frame (perhaps ceramic bearings) used to have a magnetic shaft brake on the top where I have now fitted a cooling fan and had a high ratio planetary gearbox on the front. It is German made and came from a large format printer transport mechanism - it was perhaps used as a servo motor ?).

Tweakie.

5574

Share Your GCode / Re: Hiking trail symbol g-code needed

« on: April 28, 2011, 02:13:42 AM »

Looks like Jeff beat me to it. 

Tweakie.

5575

General Mach Discussion / Re: Spindle On Off Setup No 5VDC at relay.

« on: April 27, 2011, 01:20:39 PM »

You need a driver circuit of some kind to drive the relay. The 5 volt that you are measuring is the voltage from the computer LPT port and that only sources a couple of milliamps and is not enough to drive a relay on it's own.

You could use an opto isolator, the output side would need a separate 5 volt supply to power the relay.
You could use a TTL gate, again a 5 volt supply would be necessary.
You could use a different BoB which already has the relay and drive circuit.

There are many options.

Tweakie. 

5576

Share Your GCode / Re: Hiking trail symbol g-code needed

« on: April 27, 2011, 12:48:53 PM »

I need more details of your requirement.

Do you want to route out the white part of just the outline ?
How big and what diameter tool also how deep ?

Tweakie.

5577

General Mach Discussion / Re: M11/10 and E1p1/0 problems pls help

« on: April 27, 2011, 12:32:35 PM »

Hi Chris,

I don't think there is any documentation on the plugin (perhaps we should write something  )
40uS should be checked.
Digital trigger in ports and pins should be set for the port and pin which is connected to your laser trigger and active high/low selected accordingly (this pin must not be enabled anywhere else in the setup).
That should do it.

Tweakie.

5578

General Mach Discussion / Re: Hood.....where is he?

« on: April 27, 2011, 06:53:08 AM »

Wishing you a speedy recovery Hood.

Tweakie.

5579

General Mach Discussion / Re: Reprap 3D printing machines

« on: April 27, 2011, 03:54:43 AM »

A link to someone using Mach3 for 3d printing.

http://www.thingiverse.com/thing:5233

When I have time!!!!!!!!!!!!!!!!!.

Mike

Nice find Mike thanks for sharing.

More reading for me to do. 

Tweakie.

5580

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: April 27, 2011, 01:48:46 AM »

Thanks Terry, who knows, I could be stalling out at the craft fairs later on in the year. 

Tweakie.