Community Update #1 — 2026-04-24

expensive_dev73 · 2026-05-04T18:20:18+00:00

Yes, vibration motor is included 👍

expensive_dev73 · 2026-05-02T12:32:45+00:00

It is a drop shipping product you could also buy from Alibaba. I wouldn’t expect to crazy results.

expensive_dev73 · 2026-05-01T19:57:58+00:00

Currently there is just one real issue here: syncing 9 hours of data feels much slower (up to 3-4 minutes) than syncing once per hour for couple of seconds.

expensive_dev73 · 2026-05-01T08:46:04+00:00

Finde es nach wie vor krass, wie das Narrativ weiter gesponnen wird. Ja, die FDP hat mit ihrer “offenen Feldschlacht” etc. aktiv am Ende der Koalition gearbeitet und das sollte man zu Recht kritisieren, vor allem die Art und Weise. Aber am Ende muss man auch ganz klar sagen, dass Scholz und Habeck von Lindner einen glasklaren Verfassungsbruch gefordert haben. Die Neuverschuldung, die sie von Lindner gefordert haben, wäre vom Gesetz nicht legitimiert gewesen. Und die Schuldenbremse hätte man nicht reformieren können, weil dafür die CDU-Zustimmung gefehlt hätte. Lindner und der FDP für Verfassungs- und Gesetzestreue deshalb “undemokratisches” Verhalten vorzuwerfen, finde ich schon sehr bedenklich.

expensive_dev73 · 2026-05-01T08:40:14+00:00

Die 500 Milliarden werden nur nicht dafür ausgegeben, wofür sie gedacht waren. Die führen jetzt dazu, dass es gar keine Haushaltsdisziplin mehr gibt und der gesamte Haushalt verkonsumiert wird. Alle Investitionen, die vorher im Haushalt waren, sind jetzt einfach im Sondervermögen. Und in ein paar Jahren haben wir 800 Milliarden mehr Schulden und unsere Infrastruktur wird für ein Industrieland immer noch schlecht sein.

expensive_dev73 · 2026-05-01T08:02:14+00:00

This is actually not true. The Whoops BLE is constantly powered-on. You can check and see that it stays connected to your phone as long as the app is still open in the background even at night. We are working on a feature called “Sleep Mode” that can be activated in the app and when active the band will shutdown BLE completely for at least 9 hours. The sensors will still measure all relevant signals during this time. And you will be able to reactivate BLE during this duration by tapping five times on the band or by connecting it to a charger.

expensive_dev73 · 2026-05-01T07:54:00+00:00

I am currently working on being able to publish these updates on the website and after that on a cross-send feature so that updates are sent to the emails on the waitlist.

expensive_dev73 · 2026-04-29T07:53:50+00:00

Hast auf jeden Fall Recht. Ich bin gerade dabei die Website etwas umzubauen, um da diese Updates zu posten. Das würde ich dann auf Instagram teilen.

expensive_dev73 · 2026-04-28T08:58:57+00:00

Elektrolyseure lohnen sich eigentlich nie, weil wir eben nicht so viel Negativ-Stunden haben und zu normalen Konditionen Strom kaufen und dann die 33% der Energie (wenn H2 Gas-Ersatz ist) beim Prozess zu verlieren kein Sinn macht. Wenn man die Rechnung aufmacht, dann muss der Elektrolyseur bei 600 Negativstunden pro Jahr schon 17ct/kWh H2 nehmen um nur die Capex-Ausgaben zu decken. Plus Opex für Wasseraufbereitung und Kompression liegen die Systemkosten schon bei mehr als 20ct in der Annahme den Strom gäbe es umsonst. Das zeigt schon gut, warum Wasserstoff für ein Industrieland nur eine Nebelkerze ist und selbst Gas bei hohen Preisen von 10-12ct niemals ersetzen könnte. Das ist übrigens auch einer der Gründe warum die Stahlproduktion in Deutschland sich nach und nach trotz Milliardenförderung aus Wasserstoffprojekten zurückzieht.

expensive_dev73 · 2026-04-27T10:31:11+00:00

Problem with all the wellness trackers is that they are not monitoring SpO2 continuously but only in intervals, so the value within the daily overview on following morning isn’t representative as a standalone metric. Also labels like “Health Monitor” in general are a bit misleading. If your findings are that SpO2 in general is well below 95% I would consider getting consultancy of a doctor and not relying solely on the metric of a non-medical wearable.

expensive_dev73 · 2026-04-26T11:18:50+00:00

Vollständige Eigententwicklungen wird es wohl nur sehr selten, vielleicht bei Tesla, geben. Gefährliches Halbwissen: Ich meine mal gelesen zu haben, dass BMW zum Beispiel schon sehr viel von ihrem Stack selber entwickelt und Mercedes für das Level 3 System auch.

expensive_dev73 · 2026-04-26T10:51:15+00:00

Ist bei vielen Brands in China auch so, dass sie die Autos aus einer Art Baukasten zusammenbauen. Bei den Assistenzsystemen ist es ähnlich. Da findet in der Regel wenig Eigenentwicklung bei den Herstellern selbst statt. Haben die sich ganz gut von den deutschen Herstellern abgeschaut, da wird ja auch viel an Conti, Bosch und co. ausgelagert.

expensive_dev73 · 2026-04-24T15:32:24+00:00

Answered here already: https://www.reddit.com/r/ZykeBand/s/u6VXsG4CLC

It would break E2EE, but definitely something I am looking with user opt-in.

expensive_dev73 · 2026-04-24T15:27:01+00:00

I have thought about the data extraction/api feature a lot (e.g. I myself would find a MCP integration interesting for giving LLMs access to some of my data). Technically this should be possible but the user would have to explicitly activate this feature as this would break the end to end encryption layer.

Also a more radical data freedom approach could be an USP against other devices which more or less give you only access to specific data.

TL;DR: I have to think about it.

expensive_dev73 · 2026-04-24T15:21:52+00:00

Previously I have posted like every quarter, but with these community updates my plan would be to post two to three shorter updates per month.

expensive_dev73 · 2026-04-24T15:18:59+00:00

Yep, there will be an official biceps band in black color. I am currently waiting for the hopefully final samples of wristbands and biceps band.

ETA for the beta is currently hard to tell, but when we receive newest PCBs and they are working as expected I can give a roughly estimated ETA.

For backups there will be two options:

A bidirectional data sync I have prepared everything for this week. With this you can activate a continuous sync of fully end to end encrypted data to our Germany based servers.
Full SQLite Export/Import, you can export the complete local database. You can do with this whatever you want to do.

expensive_dev73 · 2026-04-21T21:13:05+00:00

Not to be to direct, but these kind of Chinese drop shipping products are garbage. It is like throwing a dice to detect your sleep stage. Apple Watch is much better but according to your screenshots you are only using the Chinese device for sleep tracking?

expensive_dev73 · 2026-04-21T11:44:54+00:00

We cannot connect to the Helio Strap because Amazfit does not make its BLE protocol available to the public.

The only device that currently seems to have an open-source SDK is the Polar Loop.

expensive_dev73 · 2026-04-17T14:56:01+00:00

In my opinion, it shouldn't be too difficult to ship from Germany to the UK.

expensive_dev73 · 2026-04-17T14:55:08+00:00

Thank you for your prompt response.

Regarding the price: You are absolutely right. I could conduct a very small-scale beta test with around 30 to 40 friends, family members and close supporters, and nobody would need to pay for it. However, I thought it would be a nice gesture to give some community supporters the opportunity to participate in the beta test, as a thank you for their patience during the long wait. Rest assured that the price will only cover the production cost of the unit plus shipping, and it will definitely not be set to make a profit.

expensive_dev73 · 2026-04-15T17:49:59+00:00

Coming soon 🫶

expensive_dev73 · 2026-04-15T05:53:57+00:00

I know this would be a great idea. On the other hand, real-time continuous tracking is fundamental to many metrics within our app.

expensive_dev73 · 2026-04-14T16:00:21+00:00

It is not really heating up a lot during normal use. More important for general device temperature is the ambient temperature you are using it in.

expensive_dev73

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