I decided the I would use Air Manager as an interface to communicate with X-plane and design and build instruments. This has proved successful although the learning curve was high, not my preferred language to write in. I have selected the Arduino Mega as Air Manager has the capability to interface with this device. Below is the first version of a transponder based on the Bendix King KT74 for the initial testing of software and proof of concept for the hardware.
Time to put together version two a more realistic looking transponder, based as closely as possible to the original. Below is version two, which when construct will need the software upgraded and debugged.
Send any comments or idea,s etc. to firstname.lastname@example.org