Last month I made some small changes to the board. There now are two easily accessible pins for A4 and A5, which are needed for i2c communication. Pins A6, A7 and D10 are available as soldering pads on the bottom side as well. The link to the OSH park site is updated.

As mentioned in the previous project log, the library is updated, too. There now is an function for minute delays. Using this function, the device can sleep for up to one hour.