Building OpenTX on Gentoo

I just got a Turnigy 9XR radio for a new quadcopter. I had been thinking about the Parrot Beebop, but I decided that I wanted a grown-up quad, so I got the AeroQuad Cyclone kit instead.

Now, the reason I bought the Turnigy 9XR is that it has an ATmega on board with fully customizable firmware. It even has the standard Atmel ISP port for programming.

I setup my laptop to build one of the major FOSS firmwares out there, OpenTX. Building the firmware itself went fine. The tricky part was building Companion, which is basically a big GUI wrapper around avrdude for burning the firmware. I hit an error that I couldn’t quite figure out:

This turned out to be because my Gentoo system was setup with python3.3 to be hit by default, and the code above is still on python2.7. I still had a build of 2.7 available, though, so it was an easy matter of switching:

Then follow the rest of the Companion build instructions, and switch it back to python3.3 when you’re done.

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