I have been wondering what the ambient temp and relative humidity was inside the coop. Well, now I know. I made a solar powered wireless chicken coop sensor using a Arduino and nrf24l01+ for wireless communication. The electronics enclosure is all 3D printed. It is super easy to install, a 2" holesaw followed a quantity of 4 #6 X 3/4" woodscrews. No wiring...no fuss The data is relayed back to Thingspeak and is posted here It is built off a custom wireless garden sensor that I made to monitor the garden a while back. This is just the initial version. The next one will have a dust cover for the humidity sensor and I will expand number of sensors to measure the outside ambient air temp and relative humidity. This will allow me to see how well my ventilation is working. Also, I am looking at ammonia sensors too. Anyways I got more pics and info on my blog here. This will be eventually open sourced completely. Right now, I only have the enclosure posted on thingiverse here. I need to finish up the bill of materials and post the electrical board design and corresponding software and libraries. Then when that is done anybody can make one.