This newer prototype has 4 A/D converters built around the newer HX712. The DS3231 RTC and a LT1761-5 low noise voltage regulator are on the pcb.
For cost and ease of use, i kept the Arduino Pro Mini rather than a ATMEL 328P soldered on pcb.
The 4 analog inputs allow the measure of either 4 differents hives with one load cell, or 2 hives with 2 load cells each, or a single hive with 4 cells. The software has to be modified accordingly.
Here is the database diagram.
I've written a new Web user interface (UI) allowing to administrator to create new Apaguards, and users.
A user can manage his account, Apaguards, apiaries and hives as well as having access to all collected datas via tables and graphs.
The page can be reached here : http://www.egloff.eu/apaguard