This is a simplified version of Philipp Seidel's Crossfire adapter optimized for FDM printers.
By removing the lower part of the model,
it can now be printed without any supports.
If you want more clearance between the adapter and the metal handle,
add two M4 nuts to the threaded ends on the outside of the transmitter as seen in the photos.
The wiring diagram shown here also applies to the Taranis X9 Lite:
Print with the TBS logo facing down.