@FailForward @el_jefe I'm interested in building this as well, so far I didn't do anything in that direction lol

But I think anything DIY will be more expensive but also more work than just buying it. I'm particularly worried about power, you probably want solar and battery and it must survive hard frosts as well as extreme summer heat and many heat cycles. Plus, water proofing. It's not easy to diy. As far as wireless goes, if you don't need real time data, it should be doable with something like lora. Wi-fi is probably too power hungry and doesn't pass well through metalized windows. Or, you could use irda if it's just about going through the window

@FailForward @el_jefe for the record I currently monitor outdoor temperature with a simple DS18B20 stuck through a window. It works, but isn't accurate in summer when the whole wall of the building is heated up by sun

@piggo @FailForward @el_jefe we bought this thing and it's actually surviving on few AAA cells for more than a year now

https://www.alza.cz/gogen-me-3900-d5695642.htm

@FailForward @piggo @el_jefe yeah, problem is that when you go much lower, you start really losing features, i absolutely wanted to have the data exported/available on an IP network, that seemed to set the price floor quite high already

@FailForward @piggo @el_jefe actually i don't know, i use some website (ecowitt.net) it told me to and it's actually pretty good, so i haven't cared much about alternatives, but i don't think it'd be too difficult to do something else, it doesn't seem that interested in keeping the data from you

@FailForward @piggo @el_jefe yeah wind measurements are garbo (we have it covered with a house on one side), but i don't think that's a large part of the cost anyway

@pony @FailForward @el_jefe wind measurements are actually useful, at least to me, you want to detect abnormally high wind speed to warn you to close windows or clear out stuff on the balcony. wind direction is another thing though yeah thats gonna be utterly useless

@FailForward @pony @el_jefe lol reminds me how my bird feeder fell from the 5th floor and hit a bench on the street (bench came out unharmed, the feeder needed some fixing but still works). luckily, nobody was sitting on the bench