[weewx-development] weeWx on a Raspberry Pi giving 'Broken Pipe' errors

2017-08-02 Thread vk3anz
This relates to the latest update of my HP1000 (and clone) driver where I've added in code to read historical records from the weather station. Configuration: weeWx 3.6.2 running on a Raspberry Pi 3 with the latest patches. To read the historical records, the driver makes a number of network r

[weewx-development] Re: Advice on a new driver and how to make it available

2017-08-02 Thread vk3anz
I've further updated my driver (in the github repository) to read historical records from the weather station when weeWx starts up. It uses te 'genStartupRecords' function to do this. If the weeWx database is empty (the timestamp passed to the driver is None) then it will try to read all of the

[weewx-development] Re: Meaning of the UV value (and units)

2017-08-02 Thread vk3anz
Hello Bob, I found the same information (in answer to my Q3) and I've used that. The HP1000 (and clones) provide different information in various records: form the NOWRECORD (the current observation data) it provides the UVI directly, but the HISTORY_DATA record has the UV value but in uW/cm^2.

[weewx-development] Re: Meaning of the UV value (and units)

2017-08-02 Thread dr__bob
Hi Susan, according to Wikipedia (https://en.wikipedia.org/wiki/Ultraviolet_index), it looks like the UVI is the weighted UV radiation divided by 25 mW/m2 which would be, in terms of uW/cm2 , "divide by 250", I think. This should yield a number between 0 and roughly 12. Does it? Bob On Mon