Archives for August 2017 | Leavening Weather Station Blog

Repair Complete

The new components turned up within 24 hours - great service from RS.

Once everything was dismantled it was pretty obvious what the problem was …

IMG_1917

Just look at the state of the existing super capacitor - it’s completely blown.

and with a bit of help …

IMG_1921

And a bit of an audience …

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It’s all back up and running. Just in time for it to pour with rain. The real test will be post sunset tonight (possibly tomorrow if the capacitor couldn’t charge today).

Total cost of repair, about £3 plus £4.90 for a replacement battery. #GREATVALUE

Data & Hardware Problems

For a few days now the weather station has been playing up. Specifically, it fails to report wind/rain/temperature when it’s dark. Pretty strange huh?

Actually it’s easily explained. During the day the system uses solar power to send it’s updates wirelessly to my base-station. At night it uses a combination of battery power and capacitance to continue sending. The capacitor is charged during the day from the solar panel.

I think the most likely culprit is a failed capacitor so I’m going to try to replace it myself. After all - sending the system away will put it completely offline for a week at least and replacing the whole thing will cost me well over £1000. So it’s a no brainer really. If it doesn’t work then we’re in trouble … but let’s cross that bridge when we come to it.

I ordered some of these bad boys today from the nice people at RS Components in Corby :-


Capacitor

I doubt anyone in the world is interested in this but it’s a Supercapacitor HV 10F 2.7V 0.034 Ohm and it cost me about £6 to have 2 delivered (thought a spare might come in handy).

Fingers crossed, I’ll update back here in a day or so once I’ve done a bit of soldering Winking


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