I just completed a full bench-testing of the Terminus firmware. That's not on an actual working miner, just the controller and necessary parts wired up to an o-scope and some other stuff necessary to simulate inputs. And everything appears to work. So that means I've successfully implemented temperature-based fan throttling, an overtemp shutdown, and string lockup recovery (useful for undervolting), basically from scratch, in ASM, in about 3 days of work. With about 20% the code payload as the last non-working program I got from the outsourced coder, in October. And half that 20% is a bit-banged I2C.

So, I guess I'll be testing it out on actual hardware over the weekend, but things so far are looking good.

You know it's funny, I started this thread because I'd been working on the Terminus silently in the background and it looked to be near completion so I wanted to make a surprise announcement and then start sales shortly after. Too bad my initial tests were apparently flukes and the thing had some stability and reliability issues it took a while to solve. But hey now it's way the heck better.