HK-T6A layout and mods

Spontaneous Projects is a chronicle of all of my projects, a reference for me, and a way to prevent others from making the same mistakes. 

Manufacturers Layout diagram. I chose to switch the Aileron and Rudder outputs at the Rx end to better suit my application. 

This is for a Hobby King, HK-T6A transmitter, others may or may not be different

Channels

First up, I've changed the wiring around on the Rx end so that my throttle and rudder can be on the right stick, and pretty much set and forget, while the left controls the position of the craft.

USB Programmer

The elevator channel needs to be inverted though, so I'm going to try using this method to reprogram it, as the USB programming cables are fairly hard, and expensive to get. I'll even see if Jaycar has the plug for it to make a slightly more upmarket one for repeated use.

LiPo Battery 
I then had some issues with power, it turned out to be due to flicking switch A. But I'd already decided that it was dead batteries. While I was looking for confirmation that the charging port is +12V I stumbled on a page by NejC which suggested using a 11.1v LiPo battery. Given that I bought two for the 'copter, and had one spare, they're free to reuse, and last longer, it seemed like a good idea.
I followed his directions for a bit, but I wanted to keep the AA option, so rather than replacing the lead from the main board I just soldered extensions from the battery wires to an XT60 socket, and drilled out a larger hole in the back of the battery box. The batteries I have don't fit inside the battery case, so I've modded the door to hold a velcro strap and the battery just gets attached to the back of the transmitter.
When I do another order I'll get a smaller 12v battery to use as a dedicated battery, but for the moment this works well.