An Open Source Frsky Telemetry Script for the Horus X10,X12 and Taranis X9D,X9E and QX7 radios

Hi,
the teensy is not required anymore for ardupilot supports the frsky passthrough protocol as a native option.

For the pixhack you will need a cable like this one

then you’ll have to configure your serial port to output “serial protocol” 10

http://ardupilot.org/copter/docs/common-frsky-telemetry.html#frsky-telemetry-configuration-in-mission-planner

cheers,

Alex