Try out miro.com, the tool wasn't built for infrastructure diagrams, but you can do some amazing visualizations once you get comfortable with the tools there.
That said, I love this MVP! I created a quick diagram of some video systems I maintain and the experience was pretty good. <3 the svg export
Great article! The process of using hardware to count calisthenics is certainly not trivial. Thank you for sharing your data and process.
Recently my consulting firm was tasked with detecting the calisthenics exercises (push-ups, sit-ups, and pull-ups) involved in the Navy SEAL physical screening test. After much research, we were able to use the accelerometer and gyroscope on the iPhone in tandem to achieve this. I was surprised at the level of success we were able to attain. You inspire me to write up a bit about how we were able to make this work.