Soon after building the Z8 dev-board based prototype built, I made a Python+Tcl/Tk app to display the data it gathered. Time passes and it became clear that a more mobile display would be quite useful. A rainy spell during the summer permitted me to dig in to developing a phone application. Well, an iPhone app was a non-starter, as I don't have one and have no interest in purchasing something that proprietary. That seems to leave Android. When I tried it on my new-ish Moto, it was awful! Within a few minutes of the first boot of that phone, I began the process to install LineageOS. With that done, let's write some code!

Most, if not all, 'droid development appears to be done with Java or Kotlin. I've heard of Java, even remember a little. Ok, start with the includes. Err, no. Ok, guess I forgot how to Java. Again.

Finding a 'Hello, world" app that made use of things I already have installed and know how to use got things underway quickly. Five weeks later I have an app that is substantially complete, AND the boards have arrived from OSH Park! (I ordered the boards and parts when the app was functioning reliably.) A few boards built and tested later, time to kick some more app. Three months of testing, modifying, and rewriting things everything looks ready to move to beta-testing! (I still need to find an enclosure however, as my test device is taped in place.)