Hello out there,
Please could some provide me with the dimensions for the APM2.0 board including GPS daughter board? Dimensions with / without the optional case would be very helpfull.
Additionaly are there any standard recommendations for mounting from the perspective of vibration? I want to mount the unit in a trex 450 FBL (tradheli) first then perhaps purchase / scratch build a quadcopter later. Vibration damping for a traditional helicopter is perhaps off topic for this section but an understanding of the overall sensitivity of the unit to vibration would be very useful.
Sorry if this info is already on the site / shop - I looked everywhere I could think but couldn't find it.
Thanks in advance
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.
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?
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.
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
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.
X,Y & Z dims - just what I needed! Now to plan my copter install and order one :-)
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.
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.
Ya that would be great! Thanks
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 :)