OpenAPS on Intel Edison
I worked with the OpenAPS team to design a custom Explorer Board that made the OpenAPS platform accessible to thousands of people around the world. OpenAPS is an open-source artificial pancreas system used by thousands to manage their blood sugar.
Problem
OpenAPS is an open-source artificial pancreas for people with type 1 diabetes. They needed a closed-loop system years before the medical industry shipped one. Talking to an insulin pump takes a 900MHz radio. No commercial carrier board offered one.
Solution
I worked with the OpenAPS team on a custom Explorer Board, and I organised its build team. The board is what made the platform usable. It runs on Intel Edison. The green board in the photo is a 900MHz Explorer Block, dated 2016. The radio had to be designed and manufactured, because nothing on the market would do it. The system was published in the open.
Analysis
The rig people carried is a lithium cell taped to the back, with an OpenAPS sticker on the battery. The board is what let a postage-stamp module talk to a pump.
Result
A working closed-loop artificial pancreas, in daily use, years ahead of the commercial products. Thousands of people use OpenAPS to manage their blood sugar.
Photos
A 900MHz Explorer Block, 2016. I organised the build team with OpenAPS. The pump needed a radio frequency nobody was shipping. 
The rig as people carried it.