Spyke

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Wet underfloor heating controllers

Just wondered if anyone on here is using a HA compatible one.
Zigbee or Z-Wave would be fine.
Unfortunately, the controllers I got with the main control unit are Heatmiser.
They use Zigbee, but the manufacturer's own implementation which requires buying and running a proprietary hub (and sod that!)
Rather annoyingly, the controllers are pretty functional!
The manifold wiring centre itself (UH4) just works by connecting 240v lines, so shouldn't be too hard to have HA connecting the right loops at the right time.

I've considered just doing this with shelly relays and setting up a thermostat in HA, so if anyone has homebrewed an interesting solution, I'd also be interested to hear!

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Long-term feedback: SONOFF SNZB-02D humidity/temperature sensor

I thought I'd pop this up here, as I've now had mine almost a year.

I've had sonoff zigbee sensors for a while, and wanted to try this slightly updated one with a display.
To cut a long story short:

  • It works
  • It communicates and pairs with HA ZHA integration out of the box.
  • I've not had any issues at all since I bought it.
  • The display is clear
  • The bracket sticks to the wall, then the sensor magnets into the bracket. The sensor also has a fold-out stand for placing on a surface.
  • After almost 1 year on the included battery, it's showing 60%
  • I paid about £12, they're now around £14

Battery use should obviously be taken with a pinch of salt, but I would not be surprised if it's still trucking after 2 years.

Accuracy is fine for consumer level gear

I also discovered (after updating to HA latest) that temperature and humidity thresholds can be set on the device.
And that it will show symbols on the display when these limits are breached. By default, it shows a snowflake when it's under 19'C.

So, yeah. For areas where people are likely to want to check the temperature quickly, they're neat little dooberies.

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How do you handle image hosting?

I would like to start using floorplans/maps with various device actions on them. This means I need locally stored images, that can be seen over the network.
I managed to upload images to HA, but as they need to be accessed with a token, I either need to refresh the token every day (no), or have an image with a long-lived token (also not a good idea).

How have other people done things?
Is it worth spinning up an http image host?
Or maybe throwing files into an nginx folder inside HA?

Thoughts on a postcard :)

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Energy usage clamp meters

As I'm currently doing a re-wire, it's a great opportunity for me to put some metering in the house.
I'm single-phase, but I plan to monitor multiple sections of the house, which are each wired for 100A independently.

I'm currently eyeing up either the Shelly Pro 3EM – 120A or the 50A.
As it will fit nicely in the consumer unit, and supports Ethernet.

I previously looked at the Aeotec clamp devices, but they seem to be difficult to find with multiple 100A connectors.

Emporia Vue was also a consideration, but I'm always a little hesitant to buy products that require custom firmware to even work properly, when others are available. And I'd also like to avoid using 2.4Ghz wifi for connectivity.

I'd love to hear any experiences people have had with similar devices, good or bad. And how the integration with HA went.

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backend·The Back EndbyGreatAlbatross

Post-mortem: 25/03/2025 unplanned outage

This was very much a me mistake, so apologies from me.

The long story short, is that we were migrating the domain between accounts.

As the previous DNS records would be wiped during transfer, we made backups, and started the process.
This morning, the "approve transfer" button was lit.
A sensible person would have gone "perfect, lets get this scheduled".
Instead, I just pressed the button.

Unfortunately, when you transfer, and are keeping continuity, you should always make sure the receiving account is ready to re-apply the settings.
I didn't, and the receiving account owner was happily asleep. 100% my bad!

All sorted now (hopefully).
There might be some weirdness while DNS updates propagate through the various caches.

I think the lessons learned are pretty obvious:

  • Consider how noticeable downtime will be, and schedule with this in mind.
  • Check that your counterpart is online when transferring a domain.
  • Always schedule a maintenance window, even if you get excited when the button activates.
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UK Ketchup and Mayo

Years ago, I switched my mayo from Hellman's to Heinz, because the bottle design meant there was less transfer loss.

How the tables turn: I'm back on Hellman's for mayo, and they do a well reviewed ketchup too now.

(Hellman's is Unilever, a UK based company. Although they're apparently being shits to Ben and Jerry now...)

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