er9x: Elevon Mixing (good for Turnigy 9xr)

Here's some notes on elevon mixing with er9x.  It's pretty simple once you know the basics.  Here's some background on how elevons work.  Check out the calculations page... I think it's the only page on the Web with the mixing formulas -- at least as far as I could find!

• http://eastbay-rc.blogspot.com/2011/05/v-tail-mixing.html
• http://eastbay-rc.blogspot.com/2011/05/elevon-v-tail-mixing-calculations.html

Here's the mix.  The right and left elevons are on channels 2 and 3, respectively.  Note that the +/- values of the mix will be determined by the servo installation, so follow the technique on the video to make sure nothing is reversed.

2    100% ELE
  + -100% AIL
3   -100% ELE
  + -100% AIL

Here's a general introduction on er9x mixing:

• http://eastbay-rc.blogspot.com/2012/12/er9x-tutorial-mixing-good-for-turnigy.html

Here's some notes on elevon mixing for the DX6i and Stock 9x.  It's interesting to compare the different approaches.

• http://eastbay-rc.blogspot.com/2010/07/dx6i-elevon-mixing-for-superfly.html
• http://eastbay-rc.blogspot.com/2012/08/turnigy-9x-elevon-mixing.html

Here's an express version of the video:

toc: Elevons, er9x

er9x: uploading firmware

Here's how to flash the er9x firmware to your Turnigy 9XR.  Basic steps:

(note: after you write the firmware, you will get a throttle alert message.  this is normal, since the calibration settings have been cleared from writing the new firmware.  recalibrate your sticks and all will be well.)

• attach data cable.  You might need to download some drivers -- some notes on this are upcoming.
• download a copy of the firmware from this page: http://code.google.com/p/er9x
• download and install the eepe software on your computer: http://code.google.com/p/eepe
• in eepe, use the "write flash firmware to transmitter" option
• reformat eeprom memory (radio does this automatically)
• recalibrate your sticks and voltage meter