Failed Read History sun0total

[grwkak]

Thanks for the latest update with the hours of sunshine calculation.

After updating, I did notice a new graph, "sunshine," in my chart type dropdown. If I select this, then I get the following error in the log:

chart (05.07.2025 08:40:03): failed read history of sun0total (after 127 retries in 1ms): no such table: sun0total_hour (1)

I created my own metachart which works well. I also looked to see if I could map my solar sensor to something called sun0total - but that's not the issue.

Is there a bug/error? Wondering if there may be an assumption that the primary station (0) has the solar data?

Guy

[admin]

That chart has been there before and focusses on physical sunshine sensors which are sold as an addition to Davis stations. This does not relate to the new solar sensor based sunshine detection.

[grwkak]

Thanks for the clarification!

Guy

[davidmc36]

That chart has been there before and focusses on physical sunshine sensors which are sold as an addition to Davis stations. This does not relate to the new solar sensor based sunshine detection.

What sensors do you speak of?

[grwkak]

I assume this:
https://www.davisinstruments.com/produc ... 1YQAvD_BwE

Guy

[admin]

I assume this:
https://www.davisinstruments.com/produc ... 1YQAvD_BwE

Guy

Not really. There is a hardware sunshine detector from Instromet that gives an impulse every 1/100 hour of sunshine (https://instromet.co.uk/sun-duration-sensor/). This can be feed into a Davis rain bucket input and by that sunshine is cumulated by the Davis ISS as fake rain fall. Meteobridge allows to read rain data from such a fake rain sensor and have it represented as sunshine.

It is a very niche solution IMHO that did not make it much into mainstream.

[davidmc36]

Is there any way I could have MB make use of the SRsunshine.dat file from my BL Sunrecorder to display sunshine hours?

CMx uses it and inside it looks like this:

4.01
15.41
04:00:45
True

I use FTP to move it to the CMx folder on the Pi Zero.

[grwkak]

I assume this:
https://www.davisinstruments.com/produc ... 1YQAvD_BwE

Guy

Not really. There is a hardware sunshine detector from Instromet that gives an impulse every 1/100 hour of sunshine (https://instromet.co.uk/sun-duration-sensor/). This can be feed into a Davis rain bucket input and by that sunshine is cumulated by the Davis ISS as fake rain fall. Meteobridge allows to read rain data from such a fake rain sensor and have it represented as sunshine.

It is a very niche solution IMHO that did not make it much into mainstream.

Interesting! Thanks for the info.

Guy

[admin]

Is there any way I could have MB make use of the SRsunshine.dat file from my BL Sunrecorder to display sunshine hours?

CMx uses it and inside it looks like this:

4.01
15.41
04:00:45
True

I use FTP to move it to the CMx folder on the Pi Zero.

You can define a plugin that reports data in a Meteobridge compatible style and make use of it as a virtual weather station.

[davidmc36]

Thanks for that. Probably above my head at the moment but fully retired now I may have the time to figure it out.

D