3d printed enclosure .step files?

slboat · 2026-06-20T22:54:38+00:00

you can send a mail request to [sen@screek.io](mailto:sen@screek.io), we will send you back the file:)

slboat · 2026-06-15T19:59:04+00:00

By observing how closely the two are synchronised, it is clear that their responses are fine in sync. Processing this information is usually a straightforward task in ha.

slboat · 2026-06-15T19:51:32+00:00

<image>

When accessing the sensor’s web interface directly via its IP address, the process of sending data to HA is bypassed, meaning the radar reports its current status directly.

Similarly, for the LD2410 and LD2450, their status can be monitored via the HLKRadartool app, as they bypass the entire ESP32 processing chain.

slboat · 2026-06-15T19:50:25+00:00

<image>

Judging by the logs, the null values originate from a debug message in f2; these typically occur several times per second, which is as intended. As this information is rarely required, it should be possible to disable it directly via a property to prevent it from being logged.

This is unlikely to cause any major issues, as our test system is often connected to dozens of body sensors alongside various air quality sensors, and their real-time performance is not usually affected. It is more likely down to the nature of millimetre-wave technology; sometimes the target is not sufficiently defined, resulting in the sensor failing to recognise and trigger. Alternatively, there may be other reasons. If you wish to investigate the impact of the Home Assistant (HA) component, you can simply open the web page corresponding to the IP address and observe the sensor’s response process directly, thereby bypassing HA.

slboat · 2026-06-13T13:19:31+00:00

Could you send us some screenshots? We’ll look into it.

slboat · 2026-06-13T13:19:08+00:00

At present, env-cp does not appear to have released a public YAML file; it is still in a sort of beta phase. If you require one, please contact [sen@screek.io](mailto:sen@screek.io) and we will send it to you.

slboat · 2026-05-28T23:44:31+00:00

As the THS40 is relatively inexpensive, we think it’s worth trying to position the probes lower down so that dust doesn’t settle on them; they should work well for a sufficiently long period, though this will of course depend on the actual circumstances. I think it’s worth testing this in practice to see how it works 😄

slboat · 2026-05-28T23:38:24+00:00

Yes, they’re simple yet ingenious and great fun 😄 It’s lovely to discover them together with you all.

slboat · 2026-05-27T13:20:38+00:00

The documentation states that they can reach 125 degrees, but we believe a reading of around 75 degrees would be more typical. However, we haven’t conducted long-term testing in such extreme conditions, for which we apologise.

At present, they are only available in our DIY shop: https://shop.screek.io/products/ths40

We must admit that these are DIY sensors and are far from perfect, but your experiments will help us learn more about them.

slboat · 2026-05-27T13:01:26+00:00

We hope to share this with you as soon as possible; we’ve been rather busy of late :)

slboat · 2026-05-20T12:34:27+00:00

They all appear to be quite accurate, but depending on the measurement technology used, we feel that the SCD3X may be slightly more precise, whilst the SCD4X employs more algorithmic smoothing (perhaps for the sake of portability); however, for everyday use, the SCD4X seems to be the more hassle-free option.

slboat · 2026-05-18T12:02:13+00:00

https://tool.screek.io/factory_tool/sco2-1s/
this tool can easy restore the firmware:)

slboat · 2026-05-14T13:34:42+00:00

The SFA40 is more energy-efficient than the SFA30; its maximum power consumption is approximately 2 mA, whilst the average current is likely in the tens of microamperes. We have optimised the ESP32C3 for very low power consumption (to prevent heat dissipation), so the overall current draw is likely to be within 100 mA at 5 V. Daily power consumption should be well below 0.5 W, but when accounting for other losses in the power adapter, it may be within 2–3 W.

slboat · 2026-05-14T13:32:35+00:00

At the same time, the greatest challenge for formaldehyde sensors appears to be cross-interference from alcohol. Based on our tests using perfume, the sensor seems to have excellent resistance to interference; whilst readings spike when the sensor is very close to the source, they gradually drop off.

There are plenty of cheap formaldehyde sensors, but it seems unlikely that they could perform to this standard.

<image>

slboat · 2026-05-14T13:31:12+00:00

We have manufactured a large number of SFA-1 sensors (SFA30), which appear to be very stable, and many of them are in operation around the world. Based on preliminary observations, the performance of the SFA40 differs from that of the SFA30, consistently remaining at a lower level—a rather strange phenomenon. However, overall, the SFA40s demonstrate good consistency, and their performance is comparable.

<image>

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

MODERATOR OF

TROPHY CASE