If you look on line for a wifi connected max-min thermometer for your greenhouse, the cupboard is pretty bare.
A raspberry pi coupled with a Pimoroni Enviro+ is a pretty neat solution that only needs a modicum of programming to get pretty much everything a keen grower could want (plus a lot more) .
Out of the box, the Pi add-on will display current temperature, barometric pressure, humidity, light level and pollution indicators. A further small add-on gives particulate readings as well (just in case your neighbour has a chipped diesel 😉).
I’m using a spare Pi3A+, but others have used a Pi Zero WH so the resources required are pretty low.
The example python scripts are fully working examples of accessing individual as well as a touch sensitive way of scrolling through all the sensors (you lightly touch the light sensor). There is also a ‘Hello World’ for the lcd display.
All told a nice bit of kit that gives you more sensors than you could shake a stick at. For Greenhouse use the temperature, humidity and possibly light sensors have obvious application (the light sensor could be of use if say you are using Grolux lighting for your ‘exotic’ plants). The barometric pressure really only gives you a way of local weather forecasting which is probably a redundant reading in the Internet age. The pollution sensors are not that relevant in a greenhouse are of interest only, but maybe they could give an indication of pollen or an alarm if some nasty chemical was spilt by your dog or something.
[edit] I perhaps should have added that you need to use Python to program the Pi to extract the data and stick it in a file (say on an hourly basis). It is then pretty simple stuff to write a routine on your pc to read the samba share and do with it as you wish. I guess you could even use IfTTT on a mobile if you wanted.
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