A set-and-forget I2C/digital datalogger from Jan on Hackaday.io
micropower micrologger [mPmL]
This is a logical development from my first and second logger projects. The idea is simple: The logger needs to be small enough to fit inside small spaces, e.g. a bee hive.
With the press off a button it starts/stops logging. The casing can be as simple as shrink tubing!