15-07-2018, 22:38
Got a bit of time to fiddle with the weatherduino recently..
Regarding the battery voltage reporting,I noticed that I had used a 3.3kohm instead of a 3 kohm resistor...I have swapped that out for a 3k resistor and the readings are much more as expected, 14.1V during daylight, 13.2 during early night, haven't been awake early enough to know what voltage is at 5 in the morning when sun comes up. It has been running "off grid" for nearly a month now, so all good.
I have attached the RX to a R Pi Zero w running Cumulusmx. The Pi Zero W is so small that I have managed to fit it all in the one box with the RX. I have used a buck regulator from 9v to 5v which comes with a built in micro USB connector for powering the Pi - it is the Geree in the photo. The regulator gets power from the 9v point on the barrel connector - hope that makes sense.
I think it is quite a neat and relatively compact system, only one power line coming in ( and only 1 mains socket needed).
I will post some pictures of the TX and solar power and sensor set up tomorrow when I have photos. When I was deciding if and how to build a weatherduino, I found photos very useful. Hopefully my photos might help others.
I must get a UV/solar board. And a leaf/soil interface board. And an Air Quality Monitor.
This stuff is fairly addictable.
Regards,
Heeby
Regarding the battery voltage reporting,I noticed that I had used a 3.3kohm instead of a 3 kohm resistor...I have swapped that out for a 3k resistor and the readings are much more as expected, 14.1V during daylight, 13.2 during early night, haven't been awake early enough to know what voltage is at 5 in the morning when sun comes up. It has been running "off grid" for nearly a month now, so all good.
I have attached the RX to a R Pi Zero w running Cumulusmx. The Pi Zero W is so small that I have managed to fit it all in the one box with the RX. I have used a buck regulator from 9v to 5v which comes with a built in micro USB connector for powering the Pi - it is the Geree in the photo. The regulator gets power from the 9v point on the barrel connector - hope that makes sense.
I think it is quite a neat and relatively compact system, only one power line coming in ( and only 1 mains socket needed).
I will post some pictures of the TX and solar power and sensor set up tomorrow when I have photos. When I was deciding if and how to build a weatherduino, I found photos very useful. Hopefully my photos might help others.
I must get a UV/solar board. And a leaf/soil interface board. And an Air Quality Monitor.
This stuff is fairly addictable.Regards,
Heeby