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Sparkling Lights – WS2812B fairy light with WLED

With many of my neighbours putting up their decorative light shows for Christmas I was wondering if there would be something new on the market to replace the old solar powered fairy lights on our terrace which were cheap but kept dying every other year or so.

So, I found a WS2812B based fairy string light which promised to be IP65 rated at a reasonable price.

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Smarter Swimming Pool 4: Liquid Chlorine Level

My pool requires a regular influx of liquid chlorine that is stored in a large drum next to the automated chlorinator. Every couple of weeks I have to replenish that drum, otherwise the chlorine concentration in the pool water gets too low, and algae starts growing resulting in green-ish pool water. Needless to say, this has already happened a couple of times in the past and each time I had to pour in more chemicals to clean up the mess and wait a few days until the water was clean again.

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Smarter Swimming Pool 3: Water Level

Water disappears from an outdoor swimming pool over time – naturally through evaporation or through a small leak in a pipe that is hard to detect. To some degree rain helps to balance the pool water level, but sometimes you will have to top up manually. If your pool is constructed like mine, then if the water is below a certain level, the pool pump will be unable to pull enough water, and instead you get air into the pipes with unwanted consequences. Filtering water is not working efficiently anymore, the cleaning robot might stop, the pump might be damaged (water cools it down).

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