Barionet RTC

You can build your own ... or you can order it (special order, quantities apply).

If you want to build your own, here's how.

get the DS1904, it is a Dallas Onewire "Button", a realtime clock device with integrated battery
either connect it outside to the Barionet (standard onewire connection to J5, see the comments in the manual !
or add inside the case:
- you need to open the case
- you need to locate connector "J1", which is a 4 pin jumper header.
  - connect the "signal" of the RTC to pin 2 of J1 (which is the onewire interface, so you can measure 0Ohm resistance between this pin and the external onewire pin on J5)
  - connect the "ground" of the RTC to pin 4 of J1 (which is logic ground, same as pin 14 of J6)

The standard firmware automatically detects and supports the RTC.