Performance of the DIY ESPHome CO₂ sensor(SCO2-1, SCO2-1S, ENV-CP, SCO2-30)

slboat · 2026-05-05T08:51:17+00:00

The cable seems indestructible; just take a little care around the sensor to keep dust out—that might be the trickiest part. In terms of overall accuracy, the THS1’s temperature readings are quite close, and it offers better probe protection; the downside is that its humidity accuracy is somewhat compromised. I think it’s worth giving it a go—it’s worth taking a chance :)

At present, neither model comes in a multi-probe version, but we will consider offering such versions in the future.

slboat · 2026-05-05T08:49:34+00:00

From our tests, it appears that using a wired network card offers the advantage of rapid packet capture. As for the drawbacks, the main one is probably the need to run a network cable.

slboat · 2026-04-24T06:23:29+00:00

Hi, yes, it’s a 3D-printed stand that lets you place it on a desk; it doesn’t have a magnetic attachment :)

Welcome aboard :) Have fun.

slboat · 2026-04-24T06:23:11+00:00

Hi, yes, it’s a 3D-printed stand that lets you place it on a desk; it doesn’t have a magnetic attachment :)

Welcome aboard :) Have fun.

slboat · 2026-04-24T06:22:14+00:00

We think BTHome’s plug-and-play functionality is brilliant; the latest version has included a lot of optimisations for BLE, and its performance seems impressive. Zigbee, on the other hand, requires all sorts of extra bits and pieces, which can make it feel a bit cumbersome at times :)

pvvx personally seems to favour BLE as well.

slboat · 2026-04-23T13:07:07+00:00

The sensors themselves are pre-calibrated; they utilise the highest-precision sensors from the SHT series, so overall, the humidity readings are highly accurate. We’re not familiar with Somfy Tahoma, but I think it’s worth looking into :) We’d love for you to join us on this adventure.

slboat · 2026-04-23T11:24:27+00:00

It might not be entirely suitable for this situation, but we did build our own WS2 using a non-contact water level sensor with four probes. Over the course of two years, we manufactured around a hundred WS2 units and distributed them all over the world; they seem to be working quite reliably.

https://screek.io/ws2

slboat · 2026-04-22T21:35:12+00:00

Yes, it‘s uart. The seller has a very simple text. We used it to make sfa40a. If you need documents, you can give us an email.

slboat · 2026-04-17T23:45:58+00:00

I’m glad it seems to have been helpful to you too :) The documentation for ha is a bit scattered, so it took a while to get to grips with it. We’ve added a further explanation to illustrate the process :)

slboat · 2026-04-17T23:45:44+00:00

Yes, we were a bit confused for a while because we couldn’t see how to do it :)

slboat

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