Messages

7071

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: January 11, 2011, 03:14:03 AM »

Stitos,

Please accept my apologies but I really do not understand your question - could you perhaps rephrase it please.

Tweakie.

7072

General Mach Discussion / Re: jogging set up question

« on: January 10, 2011, 08:30:09 AM »

My apologies Grumpy, it was Phil's phone I was referring to. I can just imagine a Tapatalk plugin. 

Tweakie.

7073

Show"N"Tell ( Your Machines) / Re: Our 2440 x 1220mm CnC Router Builds

« on: January 10, 2011, 08:14:36 AM »

Hi Tony,

Very professional looking machine you have constructed there and it works just as well as it looks.

Please keep us posted on the things that you, and your buddy make on your machines.

Tweakie.

7074

General Mach Discussion / Re: jogging set up question

« on: January 10, 2011, 03:45:45 AM »

Sent from my HTC Desire using Tapatalk

Phil,

Has it got an LPT port for running Mach ?   

Tweakie.

7075

General Mach Discussion / Re: First test on new machine build question

« on: January 10, 2011, 03:01:32 AM »

Mike,

Stick with what Dave has said, he is the expert here, but check the settings anyway - they may be set lower than 2.25 Amps.

Tweakie.

7076

General Mach Discussion / Re: First test on new machine build question

« on: January 09, 2011, 10:54:18 AM »

May be an idea to contact Dave at Hobby CNC to get the instructions on how it is measured (location of test point) and setting up the stepper drive current. I am guessing that if you can increase the motor torque it should solve your problem.

In my book you do not need lube on the screws with delrin nuts (the wood dust sticks to the lube and it just makes things worse).

Tweakie.

7077

General Mach Discussion / Re: TTL signal

« on: January 09, 2011, 07:00:02 AM »

I suggest using a buffered breakout board such as the C10 http://www.cnc4pc.com/Store/osc/product_info.php?cPath=33&products_id=45 which will accept your 3.3 Volt signals and output the required 5 Volts. There are other breakout boards with various characteristics and at various prices and they offer a neat solution to this problem.

Tweakie.

7078

General Mach Discussion / Re: First test on new machine build question

« on: January 09, 2011, 06:48:32 AM »

The idle current reduction is just to reduce the heat in the motors (save wasted energy) because steppers require less holding current (torque) than they require driving current (torque).
Stiction occurs mainly with heavy machinery incorporating cast iron way and gibs etc but there are lubricants available these days that can reduce that effect to a bare minimum if you have sliding bearing surfaces rather than ball or roller types.

What voltage are you running the steppers at 24V ? and have you increased the drive current ?

Tweakie.

7079

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

« on: January 08, 2011, 01:19:33 PM »

For anyone considering building their own RF Laser controller / interface for use with Mach3 I have now posted my draft constructional details which may be of interest - Circuit diagram, PCB track layout, PCB component layout, PCB isolation routing GCode and the PIC programing Hex code. These can be downloaded from here http://www.cooperman.talktalk.net/J48.zip  It is early days yet and there is bound to be more revisions to the firmware but this link should always point to the current version.

Tweakie.

7080

FAQs / Re: E stop and Mach 3 help needed

« on: January 08, 2011, 12:06:40 PM »

Are you referring to false triggering of the EStop ?

Tweakie.