For a school project, I need to make observations on the weather over a week, however due to the activities we will be doing on the week, it will not be reliable to check them manually as we are away from the centre most of the day and so can't get good readings.
My plan was to hook up various sensors like temperature, pressure, maybe humidity and try and build something for a wind speed/direction meter. I don't know how yet...
I was then going to write a program that takes measurements from said sensors and records them in a file, probably on a USB stick or something to avoid too many writes to the SD card and breaking it (We're talking a write every 10 minutes for 7 days and I don't want to break the card).
Power wise, I don't know about the power situation there, so what I had planned to do was to run the Pi off a battery which gets charged from a solar panel (or two). So charge battery and power the Pi by day with the panel, then power the Pi from the battery overnight.
So there are a few questions I'd like to ask:
- Does anyone know of any good reliable sensors (I know a few, just from searching around on SparkFun and Adafruit and stuff) that I can connect through I2C or SPI or something?
- Does anyone have any good ideas on how to measure wind speed? (I had in mind a motor hooked up to a ADC so the faster the wind the more power generated)
- Wind direction doesn't really matter but if someone has a way to help it would be great.
- Finally, how would I actually power the Pi with batteries and charge them up like I planned?
I am 14 so some of this stuff confuses me but I am a fast learner and understand the majority. The man thing that confuses me as the power stuff. I can understand how to power the Pi with the batteries. Just hook up 5V worth of batteries capable of powering the Pi current/watts wise to the 5V and GND pins on the power port. But apart from that I'm clueless.
Any help at all with the above issues would be greatly appreciated.
TL;DR: Making weather station. Need suitable ideas for sensors like temp, pressure and humidity. Need ideas for device to measure wind speed and maybe direction. Need a way to power the Pi with a battery that gets charged in the daytime and then powers the Pi at night. TY in advance.