This is a cross post for one of my original blog posts on DIY Drones. It is included here for permanent reference.

T9X_1

Until recently my main TX was a Turnigy 9X and I (like many others) was using a hacked in 6 position POT switch to select modes on my various aircraft. Unfortunately the 9X has died so has been replaced by a shiny new 9XR. Rather then hack apart the 9XR (too pretty) I wanted to experiment with using the existing controls to select modes on my aircraft. I have seen several tutorials on this but none met all of my requirements below.

  1. Not relying on guessing the position of the continuous POT switches
  2. Gives a easy to read visual indicator of current mode
  3. Uses only a single radio channel
  4. All performed with the default software and hardware – no flashing/hacking required

The method I used was to combine the 3 position switch (ID0/1/2) with the Aileron Dir switch. Between these two switches there are six possible combinations which neatly matches the 6 modes of the APM ecosystem.

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