18 October 2020 - 24 October 2020
Table of Contents
1. Live Oak Weather Station
Raspberry PI zero W was turning into a pain - I really didn't want to deal with writing a SPI slave driver (there's a pun in there somewhere).
Instead, I'll just do something similar to the SJ station, which uses a Beaglebone Black and a Argent WS-1. Here I'll use a Beaglebone Green Wireless and an Argent WS-1, plus interfaces for the PM, UV, and BME680 gas sensor.
1.1. Beaglebone green wireless configured
The challenge here was working out which of the at least four different ways to configure 802.11 for the Beaglebone was the one to actually use. "connman" seemed to do the trick.
1.2. BBG SD Boot
Wiring up the "user" button to be permanently pressed seems to be reliable - there was conflicting information whether just booting once off of SD somehow makes the boot configuration permanent.
There was some evidence that the power button needed to be pressed after a powered shutdown but I haven't been able to reproduce the problem.
1.3. I2C bus configured
Fun with device tree overlays.
1.4. Sensor shelter
Three sections printed. May need one more section.
2. Math puzzle
Spent way more time solving a math puzzle - first puzzle from:
https://www.quantamagazine.org/three-math-puzzles-inspired-by-john-horton-conway-20201015/
Started to solve by hand using a "tree search", but failed to find the solution. I then solved it programatically, and then generated a search graph in 'dot'.
3. Inmate search
Just in case someone needs to know:
https://www2.illinois.gov/idoc/Offender/Pages/InmateSearch.aspx