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Messages - joeaverage

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11
General Mach Discussion / Re: New/old DIY CNC upgrade?
« on: June 22, 2023, 08:46:04 PM »
Hi,
how about posting the manual of the breakout board.

Most PWM outputs of breakout boards 'take' 10VDC from the VFD (device to be controlled) and processes it to a varying 0-10VDC voltage using PWM.
If you are expecting your breakout board to produce 0-10VDC.....but without......the raw input voltage to process than I think you'll be disappointed.

Craig

12
Mach4 General Discussion / Re: Mach4 Signal Tower script
« on: June 21, 2023, 04:47:31 PM »
Hi,
I have just been experimenting now that I am at work, and Swifty is correct an LED will not drive an output.

You could use a toggle button, because a toggle button can and does drive an output. Even with the button blinking however the output does not blink,
so the blinking is a property of the toggle button display, the underlying signal is just ON or OFF, it does not blink.

Craig

13
Mach4 General Discussion / Re: Mach4 Signal Tower script
« on: June 20, 2023, 06:23:47 PM »
Hi,
it's not to bad. Its a three step procoess.

The first step is to associate your on-screen LED with an output with the drop down list, you've picked output#30. See the pic....one of the properties of a Mach4 LED is to be
assigned to an output.

Next step is to open the ESS plugin configurator and find a spare output pin, in this case I chose port 1, pin 14 as its spare on my desktop PC. Note I've given it an alias.

Last step is to associate the output, in this case output#30, with that pin.

Now  port1 pin14 of the ESS will reflect the status of your onscreen LED.

Craig

14
Mach4 General Discussion / Re: Mach4 Signal Tower script
« on: June 19, 2023, 04:35:33 PM »
Hi,
no need for a timer or anything like it.

If you add a LED to the screen, you can set properties like size, color and blink rate.
You can also associate both inputs and outputs. If you have a blinking LED you can attach that to an output via the ESS and have a blinking tower light.
This is just using what Mach4 already has, there should be no need to invent anything new, just use whats already there.

Craig

15
General Mach Discussion / Re: program micro injector 12 nozzles
« on: June 16, 2023, 08:46:19 PM »
Hi,
I have been using Mach4Hobby for eight years, it light years ahead of Mach3 in my opinion.

https://www.machsupport.com/forum/index.php?topic=42891.msg278176#msg278176

Craig

16
General Mach Discussion / Re: program micro injector 12 nozzles
« on: June 16, 2023, 07:52:02 PM »
Hi,
I think you'd be better off with Mach4. It is so much more amenable to custom configuration than Mach3.

Craig

17
Mach4 General Discussion / Re: Bridgeport BOSS R2E4 Retrofit
« on: June 12, 2023, 08:52:51 PM »
Hi,
kool, that all sounds promising.

Craig

18
General Mach Discussion / Re: External noise causeing mach 3 to estop
« on: June 11, 2023, 05:11:05 PM »
Hi,
USB is rather noise prone. An ethernet connection is less so, and that is because an ethernet connection has a small signal transformer at each end
whereas a USB does not. I have been told that there are USB cables that have signal transformers at each end and are more noise resistant. They are a non standard part
so I suspect you would have to aske specifically for one, and pay a premium probably, but might be worth a try.

Craig

19
Mach4 General Discussion / Re: Bridgeport BOSS R2E4 Retrofit
« on: June 10, 2023, 10:47:44 PM »
Hi,
the part number of the BEI encoder should tell you the 'number of cycles' the optical disk it has been fitted with. If that number is 250, which seems highly likely,
then it is a 250 line/rev encoder and therefore a 1000 count/rev encoder. That, with the reduction you mention on 5mm screws would result in 2um
resolution, or 0.05 thousandths of an inch.

Just as a matter of clarification, have you measured the screws? Being Bridgeport I would have guessed 0.2 inch pitch screws or 5.08mm. They are so close to 5mm
that its easy to mistake one for the other.

My Delta servos have a 160,000 count per rev encoder (40,000 lines), but that would result in ridiculously fine resolution and be totally impractical to signal
at the rate required to get max speed. Using 'electronic gearing', and almost universal feature of AC servos, I have an effective encoder of 5000 count/rev. The servos
are direct coupled to 5mm pitch screws for a resolution of 1um or 0.025 thousandths of an inch, if you prefer. The point is that this resolution is as fine as I could
conceivably use, and in most cases finer than I can measure.

Your set up, if indeed you have 250 line encoders, would still be very fine resolution indeed. I do not think there is any need to swap them, the resolution as is is probably finer than
you can use anyway. That is certainly my experience. Additionally.....do you think it likely that when the machine was built they would use encoders that had less resolution than
is required? I rather think not. Bridgeport do not make those sorts of mistakes, then or now.

Craig

20
Mach4 General Discussion / Re: Bridgeport BOSS R2E4 Retrofit
« on: June 10, 2023, 07:23:51 PM »
Hi,

Quote
Yes they are encoders. BEI 250 line encoders.

Quote
Checking on the encoders - they are 250 counts per revolution,

Two different quotes from two different posts. Which is correct?. There is a difference between lines and counts. One line results in four counts.

In the first quote you say they are 250 line or 1000 count/rev and in the next quote you say they are 250 count/rev. I can't help but think the last quote is wrong.
All optical encoders have four counts per line, so 250 counts is 62.5lines????? A Half a line????

There are encoders of 256 counts/rev or 64 lines.....but I'm dubious that's is what you've got......but I don't know.

Craig

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