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Another Nest bites the dust

While I was playing in the South Carolina QSO party yesterday, I discovered my Nest thermostat decided to flake out and turn the AC on, even though it was saying the AC was off.

It’s not the first time I’ve had a Nest fail on me  before (technically, just the base of the Nest).

No idea if it just happened to be a coincidence, or if it got zapped by some RF while I was playing on the radio. Also a little puzzled as to why the Nest base failed this time and not the other times I’ve been on the radio.

A search of the internet brings up a few forum and email threads that suggest the Nest thermostat base might be susceptible to RFI, probably via RF coupling through the control cable between the thermostat and the HVAC unit.

At the old house, I think the antenna was far enough away that it was never a problem. Here, with the antenna pretty much on top of the roof, RFI into the thermostat via the wiring is a definite possibility.

 

Guess now I need to see if I can add a bunch of ferrites to the wiring.

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Charleston Eats: Lotus Vietnamese Cuisine

Pho Bo from Lotus Vietnamese Cuisine in Park Circle.

Pho Bo
Pho Bo

A nice beef broth with rice noodles and thin slices of sirloin. Could have  used some more noodles though.

If it wasn’t for the cilantro in the broth, it would have been excellent. Those of you who actually enjoy the taste of cilantro would probably like this a lot.

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In today’s church bulletin

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Snowpocalypse 2018 + 6

Six days after the near record snowfall, almost all of it is gone except for in the heavily shaded areas. Yesterday was the first day since December 31, 2017 that temperatures went above 5°C, which is some kind of record I think.


With a high of 14°C, there was a lot of melting happening yesterday. Almost all of the snow in the front yard is gone, except for some of the piles along the sides of the driveway.

Front yard Snowpocalypse 2018 remnants
Front yard Snowpocalypse 2018 remnants

Back yard Snowpocalypse 2018 remnants
Back yard Snowpocalypse 2018 remnants

Back yard Snowpocalypse 2018 remnants
Back yard Snowpocalypse 2018 remnants

I think pretty much all the major roadways are back to normal now. With another 14°C day today, the rest of Snowpocalypse 2018 should be gone by the end of the day.

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Hard drive motor as a rotary encoder

This is a pretty neat application. I guess I should have saved those motors from the hard drives I’ve dissected.

Found via Hackaday.