I haven't read this yet to confirm, but this sounds VERY MUCH like my PWM-Nibbles planned for this project...

I did, actually, come up with my idea on my own, based on the concepts I'd learned about floppy data storage in my efforts to recover data from an old floppy... that project is here, too. But linking is flaky.

Anyhow, TODO for me...

https://surfncircuits.com/2020/11/27/implementing-a-single-edge-nibble-transmission-sent-protocol-in-python-for-the-raspberry-pi-zero/

2021-09-21:

It crosses the blog again... and some more thorough documentation seems to confirm it's nearly identical...

https://hackaday.com/2021/09/16/tesla-door-handle-improvements/

->

https://en.m.wikipedia.org/wiki/SENT_(protocol)

->

https://www.idt.com/us/en/document/whp/tutorial-digital-sent-interface-zssc416xzssc417x#:~:text=The%20basic%20unit%20of%20time%20for%20SENT%20is,starts%20a%20message%20frame%20and%20provides%20a%20method.

...

<sigh>.

I did, in fact, come up with this idea as a result of learning about something dang-near completely unrelated; MFM encoding used on floppy-disks, as a result of trying to come up with a way to work around the limitations of the density of storing magnetic flux changes on a material.