Messages

6721

General Mach Discussion / Re: Step motors problem - no movement

« on: March 27, 2011, 02:43:54 PM »

I believe the CNC4PC board A25 has 5 Volt outputs but check with them first.

Tweakie.

6722

General Mach Discussion / Re: Z limit Switch with a touch pad

« on: March 27, 2011, 02:35:57 PM »

I think what you have suggested is the only way. (without fitting another PCI parallel port to get more inputs).
The probe cannot share a limit / home switch connection it has to have its own input but a home and limit switch can be configured as the same thing.

Tweakie.

6723

General Mach Discussion / Re: Z limit Switch with a touch pad

« on: March 27, 2011, 02:16:14 PM »

Entry deleted (Load of rubbish I just posted, sorry)

Tweakie.

6724

General Mach Discussion / Re: Step motors problem - no movement

« on: March 27, 2011, 02:12:05 PM »

If your PC has a spare PCI slot you can buy a  PCI parallel port card with 5 Volt outputs.

Tweakie.

6725

General Mach Discussion / Re: help please

« on: March 27, 2011, 02:07:38 PM »

Under 'Config' check your homing limits.
Is your GCode finishing with a G28 ?

Tweakie.

6726

General Mach Discussion / Re: Motors will not spin

« on: March 27, 2011, 01:57:14 PM »

When you say there is now power reaching your motors, are they locked or free to rotate by hand ?

Tweakie.

6727

General Mach Discussion / Re: Z limit Switch with a touch pad

« on: March 27, 2011, 01:13:54 PM »

It's bit of a long winded procedure but if you configure Probe as 'active low' and temporarily connect your pin 6 to ground then whichever input pin number you enter for your probe makes the 'Digitize' LED illuminate (diagnostics page) will be the LPT pin number you should use.

Tweakie.

6728

General Mach Discussion / Re: help please

« on: March 27, 2011, 01:02:21 PM »

I never use the home position but I understand that it homes the Z axis first, have you checked your home switches are working correctly ?

Tweakie.

6729

Tangent Corner / Re: Engraving sticky mat

« on: March 27, 2011, 12:07:56 PM »

That looks like interesting stuff Dave, I have never heard of it before. Johnson plastics is one of the largest suppliers of engraving materials and if they are selling it then it must be good.

There is nothing worse than engraving a full sign and then it moves during the very last word   

Tweakie.

6730

General Mach Discussion / Re: Step motors problem - no movement

« on: March 27, 2011, 11:50:48 AM »

It depends on the type of Opto Isolators fitted to your controller board but some of the China made boards require the full 5 volt TTL signals from the parallel port and are unreliable at 3.3 Volts operation.
Do you perhaps have another PC you could try.

Tweakie.