LoRaWAN Birdhouse

I have started working on another scale. This one has drainage holes in the corners of the base plate in case water gets into the birdhouse (please see the zip files). There have been a couple of downpours since I have hung the birdhouse and I'm not sure if any/how much water has gotten in. And I have added a mount point for a DS18B20 digital thermometer. Having a thermometer connected to the base plate of the scale should give better ambient temperature readings for the inside of the birdhouse.

One thing I noticed about the load cell: It is not fully temperature compensated. During a 24 hour period you can see the zero (tare) point move up or down by 1-2 grams. This is not a big issue since a typical bird for this type of birdhouse weighs about 10 grams but maybe there is something that can be done here.

I was thinking about using the temperature measurement to compensate for this drift. But the CPU thermometer used right now is not very well suited for this kind of correction. The CPU temperature is always a few degrees higher than the ambient temperature. And with the shunt regulator also close by it's not measuring the actual temperature of the weight scale.

For the next version of the birdhouse I was thinking about maybe mounting a Dallas Semiconductor DS18B20 one wire thermometer next to the load cell. That thermometer could help level the temperature drift and would also provide a better ambient temperature reading for the birdhouse.

I have hung the birdhouse into a tree 11 days ago. So far the scale has not detected any tweeties. With nesting season already in full progress this was to be expected.