Messages

6881

General Mach Discussion / Re: Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 09:21:15 AM »

Hi Ian,

Thanks for the info, I must look into this a bit more then. I didn't actually measure anything, just looked at the results in a piece of scrap perspex.
Just out of curiosity and assuming you have a better memory than me, what acceleration figure were you using for your X -Y axis ?.

Tweakie.

6882

General Mach Discussion / Re: Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 08:44:46 AM »

Hi Ian,

Thank you for the link, which I had not seen before. I have just given this a try (got quite excited) and although it may speed the Output # ? switching time there is still a delay before the next line of code is executed when using M3 or M1001.
With cutting acrylic this delay is unimportant to me it is just with engraving where the depth varies at the start and end of the kerf.
It is so annoying that the E1P1/E1P0 works so well... 'when it works'.   

Tweakie.

6883

General Mach Discussion / Re: Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 06:27:28 AM »

Hi Hood,

Thanks for your response - Yes it is for no delay, or switching at the point of the axis movement, for a laser.

Funny enough the M10 /M11 combo also suffer similar, although slightly different, behavior. There is definitely something strange here as I have tried different computers with the same result.

I have attached a modified (m10/m11) version of the earlier GCode just in case anyone wants to see the difference.

Tweakie

6884

General Mach Discussion / Is anyone else using E1P1 / E1P0 to switch output #1 ?

« on: June 28, 2010, 02:58:07 AM »

I am having an issue with switching output #1 with the commands E1P1 and E1P0.

For most of a program it works just fine then suddenly gets confused (particularly with short moves) then returns to working just fine again.
Despite much experimentation I have not been able to get to the bottom of this or find the cure.

If anyone has experienced this problem and discovered the reason or found a cure I would be most grateful to learn the answer.

I have attached a simple GCode which exhibits this problem.

Thanks,

Tweakie.

6885

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

« on: June 27, 2010, 01:27:28 AM »

Think I have done it this time fellas. The temperature controller arrived yesterday, it's bigger than I had originally thought and gray paint or not, I can't find anywhere to fit it. 
I haven't found the right thermocouple yet so I may try my hand at making one (if I can find my spot welder which I don't think I have used in the last 10 years).

Tweakie.

6886

Show"N"Tell ( Your Machines) / Re: 7X14 MINI LATHE - CNC CONVERSION

« on: June 26, 2010, 12:08:13 PM »

Looking forward to reading all about this Rich.

Tweakie.

6887

General Mach Discussion / Re: help with DC DC converter

« on: June 26, 2010, 12:03:59 PM »

Hi again,

I have searched the internet for more info on this assembled AFC5 device of yours without success.
My suggestion is that you forget about it - a dc to dc converter in itself would do little if anything to reduce any electrical noise in a CNC system anyway. If you feel that you have a noise problem then some very good tips have been detailed by Bob Warfield both here http://www.cnccookbook.com/CCCNCNoise.html as well as on this forum.

Sorry I can't be of more help.
Best regards,

Tweakie.

6888

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

« on: June 26, 2010, 01:11:38 AM »

Yea - come on Sam you are lagging behind on this one. 

Tweakie.

6889

General Mach Discussion / Re: help with DC DC converter

« on: June 26, 2010, 01:09:20 AM »

Thanks for the explanation, I understand now.

Do you have noise on the drive signals, limit switch inputs or the power lines ?.

Tweakie.

6890

General Mach Discussion / Re: help with DC DC converter

« on: June 25, 2010, 11:39:53 AM »

What do you hope to achieve by using the device please ?.

It appears to be a serial / parallel or parallel / serial converter of some sort but I am uncertain of it's application.

Tweakie.