====== Arduino, ESP32, IoT ======
===== OTA =====
  * ''%%avahi-browse _arduino._tcp --resolve --parsable --terminate%%'' autodiscover OTA capable arduino/esp devices
  * ''avahi-resolve -n esptest.local'' find IP address of OTA device with known hostname
  * Arduino IDE -> Sketch -> Export compiled binary = Create .bin file in project directory
  * ''espota.py'' or ''espota.exe'' flash .bin file to OTA capable device with known IP address
    * ''espota.py -d -r -i 10.11.171.15 -p 3232 -f esp32-adctest-multiwifi.ino.doitESP32devkitV1.bin''