4. RS-485 / thermometer connector
Rear panel RS-485 / thermometer connector options are simple. You can connect
RS-485 extension modules via RS-485 bus or digital thermometer, but not both at the
same time.
4.1. RS-485 connection
For RS-485 connection please connect RS-485 A+ of APRS Voyager to RS-485 A+ of
the module and RS-485 B- of APRS Voyager to RS-485 B- of the module. Both APRS
Voyager and telemetry module must share the same ground potential (should be
powered from the same power source or at least share the ground wire).
4.2. Thermometer connector
You can connect a DS18B20 or DS18S20 thermometer directly to APRS Voyager rear
panel.
•
DS18B20 Vdd goes to APRS Voyager V+ pin,
•
DS18B20 GND goes to APRS Voyager ground pin,
•
DS18B20 DQ goes to APRS Voyager D pin.
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