Welcome back to my build log/experiences with this project.
After playing around with and figuring out where to put the various bits I went on to add the XBee headers, powercable and 3 pin RX header to the PX4IOAR:
At this point I will skip further as the assembly is well detailed in pictures on the PX4 website. I would add that getting the spacers in between the PX4FMU and IOAR is not entirely simple without 3 or more hands, but just fiddle in the white spacer first, then push down the screw through the FMU, one by one is probably one of the easier ways to do it.
Here is what you end up with after assembly: (zippo again for size - the quad is tiny!)
Ok, now we need to get this all fitted into the EPP foam body donor of the AR Drone, including the GPS and the FLOW.
Bottom view (I know the battery is a bit incorrect, I took only one pic of this)
In the above picture you can see both the cutout for the battery as well as that for the flow unit. I am not 100% sure yet that the sonar will not have issues, but I hope not. Would not want to mount it any lower as the lens will poke out then and strike ground if it comes down hard.
Topside GPS mount closeup, as you can see I cut out a flat plateau first, and then carved a smaller space in the middle for the cable and the chip etc on the bottom of the module:
It's ALIVE!!! Look at the pretty lights!
Next up at this point is to test everything together, get the startup script correctly set up etc, plus installing the FrSky receiver when my FrSky DR 4-II arrives.