Replies to This Discussion

Permalink Reply by R. D. Starwalt on July 1, 2012 at 8:24am

I had to find dimensions off the Eagle drawing of the pcb, then made a card template with mounting holes included.

It was a few millimeters off the actual size (and mounting holes too) of the APM2 once mine arrived and I corrected the card template.

The template did not include the vertical (Z) dimension but just the foot print. The purpose was to 'fit' the APM2 into another airframe currently under construction (not blogged... yet).

If you think it useful, it could be scanned with a 0.01 inch grid paper background and I could post it here or online.

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Permalink Reply by Henry MIlls on July 1, 2012 at 8:45am

Thanks for the quick reply!

If you can post your template that would be great. I don't have Eagle at the moment but I understand there is a free version. Is it easy to get?

Thanks

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Permalink Reply by R. D. Starwalt on July 1, 2012 at 9:34am

Here you go... a photo rather than a scan (shot under fluorescent lamp thus the yellow tint).

 

I hope it helps. The xxx,yyy numbers refer to the Eagle coordinates as listed in the drawing. You can see the dark circled hole indicators as the corrected locations. I used the actual APM2 to correct the dimension of the template (trimmed with X-Acto knife) but did not correct the Eagle values written on the template. As I mentioned, the actual pcb finished off a few millimeters off my initial template.

Eagle is free (limited pcb size) and the learning curve is not too bad. There are plenty of tutorials online.

Regards,

-=Doug

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Permalink Reply by Sam Steeb on July 1, 2012 at 11:39am

I've being making blind guesses in my CAD. Just altered my drawing(based on the eagle info) to match your data/pic. Just to be very clear, did I get this right? Is it possible for someone to offer overall dimensions in xyz as well?

 

Thanks so much!

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Permalink Reply by R. D. Starwalt on July 1, 2012 at 12:16pm

Here are two more of my build with 90 degree connectors. Straight up connectors would, of course, be contained inside the boundaries of the board edges.

 

 

The variations of the actual pcb to the Eagle data is probably due to machining/routing tolerances.

In both pictures, the leftmost edge of the pins is aligned with the left ruler. Parallax prevents complete accurate alignment photos and I don't want to shoot that many pictures anyway! ;)  I shifted the bottom of the board up so that the through hole pins aligned with the ruler edge.

 

 

I will not break out my digital calipers to collect more data. :P

Regards!

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Permalink Reply by Sam Steeb on July 1, 2012 at 1:33pm

That is great! Thanks a bunch!

Been around enough production to know early drawings are never right and seldom get revised. We get stuff working and keep looking forward.

Thanks again

Sam

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Permalink Reply by Henry MIlls on July 1, 2012 at 2:37pm

Thanks Doug

X,Y & Z dims - just what I needed! Now to plan my copter install and order one :-)

 

Thanks again

 

H

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Permalink Reply by Sam Steeb on July 20, 2012 at 7:12pm

Got my APM2 yesterday... 

PDF

Solidworks

This is not 100% but the hole pattern is very close, and the rest is good enough for rough model design.

Sam

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Permalink Reply by Ellis Akins on July 22, 2012 at 5:04pm

Hi Sam,

Could you save your solidworks file to an earlier version? Like 2011? I have 2011 and am unable to open you file. I would greatly appreciate it.

Thanks,

Ellis Akins

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Permalink Reply by Sam Steeb on July 22, 2012 at 5:42pm

Ellis,

I don't have any previous versions installed anymore. This is my biggest complaint to Solidworks, no ability to send files to those who are not on maintenance or up to date. But they did no seem to care...

How about an .igs file? Won't have the pretty jpeg overlays, but the stuff that matters is there.

Sam

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Permalink Reply by Ellis Akins on July 22, 2012 at 5:43pm

Ya that would be great! Thanks

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Permalink Reply by Sam Bartho on July 26, 2012 at 8:29am

Thanks for the model Sam, just what I was looking for :)

I've tweaked it a little mainly opening up the gap between the two boards and applying the shop images as decals so they render/show in assemblies.

I've also modeled the MT3329 + adapter board with measurements based off the eagle files/datasheet (and checked against my own), I'm assuming there will be a few people using the remote GPS with the APM2 rather then the on board so will probably want that too.

So for anyone thats interested I've attached the SW2012 files and parasolids for each :)

Attachments:

• APM2.rar, 3.1 MB
• MT3329.rar, 419 KB

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