The SA8X8 series of modular amateur transceivers power a number of cheap HTs, the Baofeng being the most notorious. Unfortunately, the module lacks filtration that prevents spurious emissions from being broadcast, so they've become the scourge of many griping Elmers on their radio plantations.

I need to get better at programming for hardware, and I believe completing this project will "level me up," so here we are. How to get one of these interfaced with the Flipper Zero?

Well, I conceived of this project when I acquired two SA868S-V modules on AE for ~$8 per. After soldering some leads onto the module and breadboarding it out, I could actually only communicate successfully with the module plugged into my Flipper. I was able to send commands via the UART Terminal application, including tuning it to a frequency and receiving a broadcast on the 2 meter simplex calling frequency from my HT on the other side of the house!

So these modules are straightforward from a hardware and software perspective. That encourages me to think big, and I decided to make a prototype board that will allow me to both use audio in and out via a TRRS LRGM headphone set but also send those signals to the FZ, either to be processed in the unit itself or to hand them off to a connected computer. Also, I put a filter on the thing so less Fuddhunts happening to you because you dared disturb their exchange of Monica Lewinsky jokes.