Barionet RTC
Revision as of 01:11, 20 April 2009 by Jrietschel (talk | contribs) (New page: == 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 ...)
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.
