=== Software ===
* install/enable luma.oled [https://luma-oled.readthedocs.io/en/latest/install.html link] + examples [https://github.com/rm-hull/luma.examples link], make sure examples run
* find font files 'concertone-regular.ttf' and 'fontawesome-webfont.ttf'
* install homebrew oledserver/server, use example scripts for verification
* update node-red from current version on RPi https://nodered.org/docs/hardware/raspberrypi