Messages

8431

General Mach Discussion / Re: "Limit Switch Triggered"

« on: January 13, 2009, 09:43:35 AM »

ACTIVE LOW is what I have suggested.

Tweakie.

8432

General Mach Discussion / Re: "Limit Switch Triggered"

« on: January 12, 2009, 12:20:38 PM »

To follow my circuit recommendation you will need to use the n.o. switch contacts (or replace the switches if they only have n.c. contacts available) - the switches only close when the limit is reached.

A problem with raising the debounce is that the switch needs to be energized for the debounce interval to be recognized by Mach as a stop and by then the machine may have traveled to the mechanical stop position (crunch).

Tweakie.

8433

Show"N"Tell ( Your Machines) / Re: CNC Pipe Bender

« on: January 12, 2009, 11:57:26 AM »

Just a thought Zafar, does that mean 700 tractors a day ?

Tweakie.

8434

General Mach Discussion / Re: "Limit Switch Triggered"

« on: January 12, 2009, 11:41:13 AM »

The basic circuit I have in mind would look something like this.

Tweakie.

8435

General Mach Discussion / Re: "Limit Switch Triggered"

« on: January 12, 2009, 08:53:38 AM »

Change your limit switches AND e-stop to active low. Reconfigure Mach input signals accordingly. (You may need to use pull up resistors to +5V (not +12V) on each of the limit switch and e-stop inputs).

Tweakie.

8436

Show"N"Tell ( What you have made with your CNC machine.) / Re: Routing Wood

« on: January 12, 2009, 08:26:15 AM »

This stuff is the other way round - black on the outside and white in the middle.

Tweakie.

8437

Show"N"Tell ( Your Machines) / Re: Started my Taig enclosure......

« on: January 11, 2009, 11:13:06 AM »

Hi Dave,

Could have saved you a lot of work if you lived in the UK. I've just taken my mini mill out of its enclosure which is now awaiting the scrap man.

Regards, Tweakie.

8438

Show"N"Tell ( Your Machines) / Re: CNC Pipe Bender

« on: January 11, 2009, 11:04:00 AM »

Brilliant machine and expert programing, I just pity the poor old electrician trying to get  his wires down that conduit.

Tweakie.

8439

Show"N"Tell ( What you have made with your CNC machine.) / Re: Routing Wood

« on: January 11, 2009, 10:54:07 AM »

Hi Dave,

I assume you mean the pencil.

The tag is 'Trafolite', which is an engraving laminate - this one is white on the outside and black in the middle, you just engrave through the outer layer and bingo. Its available in all colors and color combinations. It must be known by a different trade name in the US.

Regards, Tweakie.

8440

Show"N"Tell ( What you have made with your CNC machine.) / Re: Routing Wood

« on: January 11, 2009, 08:35:59 AM »

That is beautiful John. My complements on your work.

Tweakie.