===== Install OWL on rasberry pi =====
  * https://forums.raspberrypi.com/viewtopic.php?t=27379
  * https://www.abelectronics.co.uk/kb/article/3/owfs-with-i2c-support-on-raspberry-pi
  * https://www.raspberrypaul.co.uk/2021/04/20/install-owfs-for-ds2482-800/

===== Build thermometers =====
  * https://theorangeone.net/posts/esphome-dht-sensor/

==== Dallas sensors; ====
  * https://www.home-assistant.io/integrations/onewire/
  * https://esphome.io/components/sensor/dallas.html
  * https://www.amazon.co.uk/dp/B07KNQJ3D7
  * https://www.abelectronics.co.uk/kb/article/3/owfs-with-i2c-support-on-raspberry-pi

=== esp8266 to ir codes ===
  * https://community.openhab.org/t/best-air-conditioner-for-openhab-in-2020/99991/4
  * https://templates.blakadder.com/misc.html
  * https://github.com/crankyoldgit/IRremoteESP8266/blob/master/SupportedProtocols.md