My project involves collecting sensor data from somewhere down the garden and wirelessly communicating that data to a webserver in the house.
I'll have no wired power in the garden and would like to last as long as possible before having to replace/recharge the batteries (at least a month, ideally 6 months +)
To save power, I had in mind that I could first write the data to an SD card and then connect to the home wifi on a daily basis and upload the data to a web form hosted on my local network.
At the moment I'm using an uno, but I sort of assumed that I'd end up actually implementing on a different controller that was better at conserving power and just prototyped the project with the uno.
I'd like to know if this a reasonable approach and what shield(s) I should be getting to store data and communicate to the network.
Any advice would be welcome.