“The problem.
I develop a sketch near PC and I use usb and serial to “debug” in this case I create the lib for DHT12, I deliver a version on github of the library.
But arrive an issue: “when temperature go under 0 the readed value is wrong”.
Now I must test the problem on my freezer (:P) and I don’t want to rewrite a sketch and use WIFI for a simple situation like so.
So without rewrite sketch I want continue programming like previous, but my Arduino must go on my freezer.
I need 2 thing, one is a battery, but I don’t know how many test I must do so I need a rechargeable battery, and an adapter to work with microcontroller remotely, like Bluetooth.”