What’s at the heart of the iRythm Zeo XT monitor?
I came into possession of a Zeo XT long-term heart monitor (see image right). The device was sent to someone I know who ended up not using it. So I took it and,...
Tag: pcb
Going with the reflow: building my own oven for Level One Manufacturing
A while back I read an interesting article that placed hobbyists making things (Level 1 – 1-100 units) on the same axis as big manufactures (Level 3 ̵...
Project: I’ve been shot (COVID-19 vaccine badge)
Back in January, when I was pondering my Jan-Feb project (for my year-long challenge), members of my family were starting to get vaccinated. Since I’ve be...
Learning to KiCad with the other foot
My wife, who was a crack soccer player in her youth and an overall able athlete, is full of sport metaphors for life. One, particularly relevant to the story to...
Fun with cardboard circuits
The usual progression for making printed circuits is (very roughly) you design the circuit, prototype it on a breadboard, design your PCB, and iterate on your P...