The outside node is finished, and put to use. As spring is approaching this will be okay, but I don't think the batteries will be happy during winter. That's a problem I will take when "Winter is coming", to quote a popular TV show
The walls where I live now are made of concrete and I noticed that the reception is not so good trough these walls. This is very evident after having the sensor running for a while. I have programmed the node to send data once every 24 minutes. Sometimes it can take as long as an hour and a half between reception of data. Since this is not time critical, I'll let it pass.
Next part - Inside temperature sensor