PCB Milling - Illumination disk and Limit Switch boards

Anool
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PCB Milling - Illumination disk and Limit Switch boards

Post by Anool » Sat Jun 08, 2013 1:20 pm

I finished my ShapeOko build a while back. I'm using a 300W 48V DC spindle with ER11 collet, bought off eBay (http://www.ebay.com/itm/ws/eBayISAPI.dl ... AQ:US:1123)
I made a couple of boards, and have learnt a lot from the process.

The boards were designed in KiCad. The Gerber code was converted to G-Code using LineGrinder. For engraving, I used these 10 deg engraving bits from eBay (http://www.ebay.in/itm/ws/eBayISAPI.dll ... 4215wt_902)

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Illumination disk

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Assembled Unit

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12 LED's, run from the same power supply as the spindle, at 48V DC. A 500 ohm series resistor limits LED current to 15mA.

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Mounted to the Spindle using double sided tape.

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Bright enough

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The collet throws a bit of a shadow, so I will have to lower the board.

I'll probably insert some spacer disks between the PCB and Spindle, or make some other kind of extension.
If anyone wants the design files - KiCad / Gerber Code - let me know. I'm now working on installing limit switches.
Anool J M : Mumbai, India
team Wyolum (wyolum.com)

Tom Smith
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by Tom Smith » Sat Jun 08, 2013 2:53 pm

Anool wrote: If anyone wants the design files - KiCad / Gerber Code - let me know. I'm now working on installing limit switches.
Nice work, i like this idea, I'd be interested in the design files. One thing you could try to get rid of the shadow is to make a diffuser disk out of plexiglass; scuff one side with sandpaper and the shadows will be lessened somewhat.

Tom
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Anool
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by Anool » Sat Jun 08, 2013 3:05 pm

Nice idea for the diffuser. Will test it out next week.

About the files, I'll post a link on Monday. They're all located on my work PC.
Anool J M : Mumbai, India
team Wyolum (wyolum.com)

bjbsquared
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by bjbsquared » Sat Jun 08, 2013 6:37 pm

I like the shadows.
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WillAdams
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by WillAdams » Sat Jun 08, 2013 6:39 pm

Scintillating!

(I added Line Grinder to the wiki)
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
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twforeman
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by twforeman » Sun Jun 09, 2013 1:59 am

Neat. The shadows remind me of theBulbDial clock. (I have one.)
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Anool
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by Anool » Mon Jun 10, 2013 10:05 am

The design files for the Illuminator board are at this link :

https://www.dropbox.com/sh/9l1yc2f1ttydh4a/bXUF2YmGjJ
Illum.png
Illuminator
Illum.png (146.53 KiB) Viewed 4844 times
It's a KiCad project, with the new file formats (you may need to upgrade KiCad if you have the old version)
The Illum_Gerb sub-folder has the Gerber files for front Cu layer, and Excellon drill file.
I didn't make the edge cuts file, since LineGrinder can only handle square/rectangle edge cuts.
I allowed KiCad to include the Edges on the copper layer. LineGrinder then made a nice isolation cut , which I used to cut the board to size with a shear.
Last edited by Anool on Mon Jun 10, 2013 1:45 pm, edited 1 time in total.
Anool J M : Mumbai, India
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cvoinescu
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by cvoinescu » Mon Jun 10, 2013 1:10 pm

That looks neat, but why the caps? Surely the LEDs don't mind a noisy power supply. Not installing the caps has another, frivolous advantage: it lets you use PWM to power the board, if you feel inclined to vary the brightness at some point in the future.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

Anool
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by Anool » Mon Jun 10, 2013 2:13 pm

The Illuminator is in parallel with the spindle, so I just wanted to be safe. Spindle is 300W, driven from a 450W Meanwell SMPS. Even so, the LED's go Off for an instant when the spindle is turned on. At the moment, there's just a 100nF.
PWM - maybe at a later date. Right now, I'm just keen to get the ShapeOko up and running.
Anool J M : Mumbai, India
team Wyolum (wyolum.com)

calica
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Re: PCB Milling - Illumination disk and Limit Switch boards

Post by calica » Mon Aug 12, 2013 7:24 pm

How is the board attached to the spindle? Are you happy with the eBay spindle?

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