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January 26, 2020, 12:48:59 PM *
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 1 
 on: Today at 11:14:41 AM 
Started by tweakie - Last post by ArtF
Tweaky:

   Nice work. Nice to know the numbers work out in reality. Smiley

Art


 2 
 on: Today at 08:52:33 AM 
Started by tweakie - Last post by Hessel Oosten
Great Paul/Tweakie !

If I remember well NYC CNC (on YouTube) once made a hypocyclo id reductor of a normal speed electric motor to 1 rotation in 30 years !!!
They did put several reducer layers behind each other, so it's clear now that Paul is --not-- fully ready at this moment .... Wink

https://www.youtube.com/watch?v=Eds48L4cJjM

Some nice explanati ons also here:

http://www.zincland.com/hypocycloid/

and

http://www.meccanotec.com/gearlesshands.htm

Hessel

p.s.

My interest in this subject is caused by the fact that I'm trying to build the Woodward gearless clock
(which has in the John Wilding drawings, also a daisy wheel for the 12:1 reduction for the dials).

https://www.dropbox.com/sh/jjwli7femazj0vz/AADswfFzc4C_xNEGiB7gYszSa?dl=0

 3 
 on: Today at 08:10:06 AM 
Started by tweakie - Last post by tweakie
A few seconds of poor quality video, just to prove that it works  Grin

https://youtu.be/u3Mh1E4GgHE

Tweakie.

 4 
 on: January 25, 2020, 04:31:10 PM 
Started by gburk - Last post by gburk
Art

I think the major differenc e is i setup the form and compiled with C++/CLR and i haven't seen alot of info on CLR but i think it somewhat different in the way it passes functions between classes than in C++ 
I will keep searching ..

Gary

 5 
 on: January 25, 2020, 03:54:09 PM 
Started by JohnHaine - Last post by JohnHaine
Thanks Art, and also Kirk, that website is cool!

Generatin g the cam is slightly complicat ed by the fact that the follower for a clock is probably going to be on the end of a pivoted arm which drives a pointer - you have to allow for the fact that you probably want the pointer scale to be linear in minutes, as well of course for the diameter of the follower pin.

 6 
 on: January 25, 2020, 09:59:41 AM 
Started by MarkW - Last post by ArtF
Mark:

 Glad to hear you've got it working. Nice to see so many people
using Auggie these days. Let us know how your photos and engraving s
turn out.

Art


 7 
 on: January 24, 2020, 08:15:05 PM 
Started by MarkW - Last post by MarkW
It was working on my head so I had to go try my solution tonight.  I knew I'd never sleep.

 I used the DIO33 type pin 18 on Pokeys57C NC  (PWM4 in Auggie).   I can now fire the laser diode.  10% power results in approxima tely 1A power from 5V laser supply.  100% is 4A. 0% is 0A.  So I am varying the laser power at least.

Still not sure what period to pwm freq to use but that will wait until tomorrow along with other fine tuning.

Mark

 8 
 on: January 24, 2020, 07:32:54 PM 
Started by MarkW - Last post by MarkW
Thanks Art.   I'll check to make sure but am pretty confident they are set as you indicated .   When I hit the fire button the led in auggie lights for the time I have selected,  1 sec.

After t/s I think it a connectio n problem.   I'm using an OCOC output driving an optically isolated input in my laser control board.  Once I looked at two schematic s I see it cannot work.  Tomorrow I'll charge to a DIO33 type output.   Pretty confident that will work.

Mark

 9 
 on: January 24, 2020, 05:08:55 PM 
Started by tweakie - Last post by ArtF
Hessel:

 Thx, good informati on. Proves my thought that 3 pins are enough as well.
I like it.

Art

 10 
 on: January 24, 2020, 05:07:58 PM 
Started by MarkW - Last post by ArtF
Hi Mark:

 Make sure the PWM is longer or shorter depending fire time selected. If is does vary,
I suspect your on your way. You have to have the

GCodeLib and SpindleLi b-Laser enabled under Gcode as well as
MotionIO under IO.

  I think thats it, as long as an M3 has been run , the fire button should work.
Make sure you ran an M3 in the single line MDI though, it wont shoot unless
M3 is activated . It should flash that laser is  enabled at that point.

Art





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