serowe wrote:Connection to PC isn't an issue - it is the connection from sensors to base station that is my primary concern. I have emailed LaCrosse in Oz and will see what they can tell me.
I am afraid with the La-Crosse range.... Connection to the PC and Cumulus is a matter of urgency! Serial is the only reliable connection to be used with the La-Crosse & Cumulus.
Now in relation to the connection to the Sensors and the Base Unit.....
You can go for the Wireless Setup - Explained here....
"Wireless 433MHz transmission:
Using 433MHz wireless transmission of weather data from the sensor to the base station will provide users greater freedom as to where units can be positioned without the need to be restricted by cable.
433MHz data transmission:
Measuring interval
thermo-hygro sensor : 32 sec (if wind factor>10m/s) or 128sec (if wind fac-tor<10m/s) 10 minutes (if the base station fails to receive any data after 5 attempts in a row; all outdoor data read-ings will display “---“, except for the rain value)"
Or the much preferred option.... Cabled... - Explained here....
"Cable Connection:
Using this method of operation will provide interference free transfer of the weather data from the sensors to the base station. The data sending interval from the sensors to the base station will also be more frequent compared to using 433MHz transmission and will result in higher power consumption. Therefore batteries will have a shorter life span for cable connection compared to using 433MHz.
To operate using cable connection, simply use the enclosed 10 meter cable and connect the thermo-hygro sensor to the base station. Once the connection is detected, the base station will automatically con-tinue reading the data from the sensor.
The user may at any time switch from cable connection to using 433MHz (or vice versa) by simply disconnecting (or connecting) the cable from the base station to the sensor. When the base station detects no cable connection to the sensors, the existing data reading interval is changed to the new reading interval, i.e. using cable con-nection is every 8 seconds data reading interval or from 32 seconds - 128 seconds intervals when using 433MHz (depending on wind speed)
Using the AC adaptor to operate the base station will also supply power to the sensor if the cable is connected to it. Batteries used for 433MHz transmission may be left in the sensor when using cable connection for power back-up in case of AC power failure. A loss of power would desynchronize the base station and the sensor and no weather data will be received.
With wire data transmission:
Measuring interval
thermo-hygro sensor : 8 seconds"