@djh #T1D myself. Of course, and of course this one...

@djh #T1D myself. Of course, and of course this one is a system built from multiple parts with no certification. I actually considered setting up such a system for myself a few years back. It's the uncommon cases that made me back off.
I don't see it as a software problem, feedback loops are the easy bit. The hard parts are input signal - determining blood sugar levels over time and output - delivering insulin. I have difficulty with both. /...

Like 27 Oct 2023 at 6:04 | Wall-to-wall | Open on hachyderm.io

2 comments

ariels

@djh /...
Delivery sometimes clogs up - same amount of insulin starts doing much less. And the latest generation of sensors is actually accurate enough for me to depend on them - except for the first few hours. OSS can't fix these component issues, neither can systems engineering. With a more suitable infusion set (one intended for kids) and a current sensor this works well enough, and I'm on a closed loop system now.
../

27 Oct 2023 at 6:11 | Open on hachyderm.io

ariels

@djh /...
Having the controller on the pump is critical: a separate uncoordinated component means that you cannot fail open or closed, only fail. The pump user interface and programmability are awful, I'd ove to replace it. But the complete system is now important. Everything fails, so this is literally vital.

27 Oct 2023 at 6:14 | Open on hachyderm.io