First of all, many thanks to Hackaday for the prize on the "Open Hardware Design Challenge"

We were busy to organize our marriage in last few weeks.
But now it is time to continue our project!

The firmware is almost complete, only debugging part is missing.
Regarding the temperature sensor: the temperature sensor of the PIC is uncalibrated. This means that user has to calibrate the sensor first if the user needs this functionality.

We also decided to use 4 layer PCB, the internal 2 layers are GND and VCC.
In this way the power path has low impedance, useful in the chain connection, plus the other traces are better routed.