I'm going to make a bizarre proposal.? Let's redo the Xcat using the Pi Pico as a stepping stone to the X9000. ?We already know everything we need to know about the X and electrically it has the same issues as the X9000 (5 volt logic levels).
The RP2040-Zero form factor (https://www.waveshare.com/rp2040-zero.htm) as castellated module would?be ideal for a DIY project.? The module?would just solder on to a custom board we'd design.? With Kicad and the cheap and fast low quantity?PCB houses suchj as JLCPCB we have now a small run of PCBs is cheaper than a burger.
I'll commit to doing the code.? I've already ordered 3 modules.
Is there anyone in the group that'll commit to doing the PCB??
Once it's working on the X the same code base can be updated to work with the X9000 once it has given up its mysteries.
73's Skip WB6YMH