The Oregon Scientific RMR500 is a neat using displaying temperature and humidity from indoor and outdoor sensors via wireless. Oregon Scientific no longer sell the outdoor units, making the RMR500 useless. Instead of buying an expensive new model and all new sensor units, I looked at the Pi Zero for a replacement sensor. Everything was too hard. Now we have the Pi Zero W.
The central unit could be a Pi 3. I have two and I will soon have a small screen dedicated to one of the 3's for use as my EEE, my Electronic Environmental Evaluator. Each sensor will be a Pi Zero W. I will use a Wifi router in the middle to increase the range and to let the Pi 3 talk sun/sleet/surf with the outside world.
The outside sensors can be in a waterproof plastic box. Add a battery and a small solar cell. I could monitor the voltage from the cell as a way to measure solar radiation.
I could put the sensor on a springy pole and add the GPS hat. I could then calculate wind strength and direction from the deflection.
I could put the pole on a flotation device then calculate the ocean water level by the vertical movement but I doubt that will be of much use. By the time a tsunami reaches this level of our building, an accurate measurement of the depth might not be the highest priority.
The important thing is the flexibility to add any type of sensor and as many sensors as I want. Forget the limitations of an Oregon Scientific product.
My starting point:
I do not need all the sensors and will start with just temp plus humidity. I had analogue sensors for an Arduino. The following item looks interesting but not suitable for outdoor use and it is dependent on some board that is not suitable for a small outdoors sensor.
https://www.raspberrypi.org/learning/se ... _humidity/
What would be the minimal setup for a small outdoors sensor?