Low budget plasma setup, what do I need?
29 Apr 2019 14:22 #132292
by andypugh
Replied by andypugh on topic Low budget plasma setup, what do I need?
A lack of real output bearings (or, in fact, a real output shaft) is definitely a concern with that 3D printed reducer.
Also, the video seems to suggest an awful lot of backlash.
On reflection, a 3D printed Harmonic reducer is a much more interesting idea...
Also, the video seems to suggest an awful lot of backlash.
On reflection, a 3D printed Harmonic reducer is a much more interesting idea...
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29 Apr 2019 14:30 #132294
by tecno
Replied by tecno on topic Low budget plasma setup, what do I need?
I agree, will take a lot of trial and error modifying parts to that 6:1 reducer good.
Have you seen any harmonic reducers with 5:1 or 6:1 ? 3D printed that is?
Have you seen any harmonic reducers with 5:1 or 6:1 ? 3D printed that is?
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29 Apr 2019 15:29 #132299
by andypugh
No. I was thinking about 120:1 for robots.
Replied by andypugh on topic Low budget plasma setup, what do I need?
Have you seen any harmonic reducers with 5:1 or 6:1 ? 3D printed that is?
No. I was thinking about 120:1 for robots.
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29 Apr 2019 15:32 #132300
by andypugh
Already been done, it seems.
www.thingiverse.com/search?q=Harmonic+Drive&dwh=375cc718e136395
Replied by andypugh on topic Low budget plasma setup, what do I need?
Have you seen any harmonic reducers with 5:1 or 6:1 ? 3D printed that is?
No. I was thinking about 120:1 for robots.
Already been done, it seems.
www.thingiverse.com/search?q=Harmonic+Drive&dwh=375cc718e136395
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01 May 2019 07:32 #132415
by tecno
Peter, can you help me and add code for one 7i37 as I need some inputs. That would be much appreciated.
Replied by tecno on topic Low budget plasma setup, what do I need?
freeby.mesanet.com/7i90_plasma.zip
Contains the correct bitfile (8 stepgens, 2 PWM gens and 2 "A" pin only encoders on I/O 0..23)
The one in the dist is broken, will fix tomorrow
Peter, can you help me and add code for one 7i37 as I need some inputs. That would be much appreciated.
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01 May 2019 11:31 #132426
by andypugh
Replied by andypugh on topic Low budget plasma setup, what do I need?
Peter, can you help me and add code for one 7i37 as I need some inputs. That would be much appreciated.
Does the firmware have any smart-serial channels? That might be a more efficient way to add GPIO pins.
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01 May 2019 11:32 - 01 May 2019 11:32 #132428
by andypugh
Replied by andypugh on topic Low budget plasma setup, what do I need?
I see that you have the crossed-roller way and so are using that, but did you see the posts where I suggested that there are some guided pneumatic cylinders that look perfect for the job of being a lockable floating mount?
Last edit: 01 May 2019 11:32 by andypugh.
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01 May 2019 11:43 #132429
by tecno
Replied by tecno on topic Low budget plasma setup, what do I need?
Peter, can you help me and add code for one 7i37 as I need some inputs. That would be much appreciated.
Does the firmware have any smart-serial channels? That might be a more efficient way to add GPIO pins.
But that would need another board and I have the 7i37 already.
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01 May 2019 12:15 #132430
by tecno
OK, yes it could work but again that would be something I´d have to buy = I will have to make do with what I have at hand.
Replied by tecno on topic Low budget plasma setup, what do I need?
I see that you have the crossed-roller way and so are using that, but did you see the posts where I suggested that there are some guided pneumatic cylinders that look perfect for the job of being a lockable floating mount?
OK, yes it could work but again that would be something I´d have to buy = I will have to make do with what I have at hand.
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01 May 2019 18:34 #132453
by PCW
Replied by PCW on topic Low budget plasma setup, what do I need?
There is no "code" for a 7I37, all I/O is just GPIO
The first 16 GPIO on a connector with a 7I37 are inputs
The last 8 GPIO on a connector with a 7I37 are outputs
and these 8 GPIO must be set to output mode
The first 16 GPIO on a connector with a 7I37 are inputs
The last 8 GPIO on a connector with a 7I37 are outputs
and these 8 GPIO must be set to output mode
The following user(s) said Thank You: tecno
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