At least the TinyPilot firmware is Open Source https://github.com/tiny-pilot/tinypilot - i don't know Pi-KVM. And it's a normal RaspberryPi with a debian-based os. So you should be able to just attach an LTE modem via USB and configure it via SSH, right?
Yeah, it should be pretty easy to add an LTE modem. Configuring the networking failover might take some hands on work; it would be a huge boon if either or both projects eventually took care of that for you too. I've had enough experiences where out of band management would be well worth the cost of the cell service that this is something I could see having wide appeal.
For my design I don't want that, because then we're just making it even more complex. There's a VGA encoder I've been working on, I don't recall the chip ID but I found it in the Lantronix Spiders I have. I've been slowly trying to build a HAT with that that pipes into the Pi for everything else.
If I can keep the cost down, I'm aiming for $100/unit, then I think I could sell quite a few. The nearest competitor, the Lantronix Spider, is $300+ if you can even find them.
For my design I don't want that, because then we're just making it even more complex. I'd have to have an HDMI ancoder, then a VGA to HDMI encoder that plugs into that. There's a VGA encoder I've been working on, I don't recall the chip ID but I found it in the Lantronix Spiders I have. I've been slowly trying to build a HAT with that that pipes into the Pi for everything else. Then there is no daisy chaining adapters.
i used to have one of those "hdmi over ethernet" devices which i captured with ffmpeg and used for his purpose. worked well, about 100ms latency for the capture/conversion
