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Starmill BBC

Post by Phil Gravett »

Hi, just joined this very informative forum. I am running an old Starmill on a BBC and it is getting very frustrating to have to switch between edit program and machine control. Also pauses in circular inter', not smooth cut.
I wish to update to pc but not sure where to start. I know this machine was supplied as pc version as I have an old Amstrad disc and dongle but no 5 1/2 " discdrive and think it is corrupted anyway.
I do not want to get involved at this stage with changing internal electronics. Anyone out there been through this?
The machine is same as one in photo archive.
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Post by Steve »

I am not sure what control you have.

If it is a Smartstep or Denstep then you could be out of luck :(

Have a look at the guide below and see if your electronics is anything like this


https://www.denfordata.com/projectimages ... _guide.pdf
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Post by Phil Gravett »

Thanks for prompt reply. I have printed out data and will get at back of machine this weekend. Fingers crossed. Phil.
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Post by Denford Admin »

For this kind of vintage machine (ie 80's BBC micro) you really have no choice but to go to some new hardware and PC control software.
I think even the DOS controls struggled to interpolate circles greater than 90 degs.
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Post by Phil Gravett »

I am begining to realise that. Not used Dos but the tool dwells on any radius. So I am am doing well to get anything close to round out ! What are my options then. I haven't got thousands to spend.
I have got computors spare running anything from 3.1 to Vista.
All suggestions welcomed. Phil Gravett.
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Post by Denford Admin »

The cheapest way will be to look at using software like Mach
https://www.artsoftcontrols.com/artsoft/index/index.htm

Others on here have updated starturns and triacs to run with Mach - have a good look at posts by sweep and davidimurray

Using some software like Mach will mean you can spend the money to buy interface cards and drives, or you can do it cheaper by making them yourself.
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Post by Januseng »

Phil.

I have converted a Novamill to run using Mach. It has a CNC4PC C11 breakout board, Routout stepper drivers and a spindle motor driver from:-
https://www.beel.ca/smcmanual.pdf

Have a look at this to see it.

https://www.machsupport.com/forum/index. ... 833.0.html

If I can help with more information, just ask.

Ian
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