Top all-time · #12492
Blues Developer Center
Company blog · dev.blues.io/bloghardwaresystems
Blues Developer Center is the company blog at dev.blues.io, writing about hardware and systems. Since 2021, 6 different Hacker News readers have linked it 11 times, most often “How We Unit Test Embedded C Code at Blues”. It is still writing: the last post was on 2026-10-13, and you can follow it by feed.
Too few sampled comments (4) to say how often HN recommends it.?
Why HN links it
HN readers link the Blues Developer Center for its Notecard IoT hardware docs, datasheets, API references and getting-started guides, including cellular and ESP32 setup tutorials.
Summarised by Claude from a sample of 4 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Tutorials, SDKs, and docs for Blues Notecard - your IoT connectivity choice for LTE Cat-1, Cat-1 bis, LTE-M, NB-IoT, Satellite, LoRa, and WiFi.
Most-linked posts?
- How We Unit Test Embedded C Code at Blues2 people · 2 mentions · first linked 2023-06-29
- /reference/notecard-api/hub-requests/2 people · 2 mentions · first linked 2021-08-03
What Hacker News says?
Just so there's no confusion, you linked to the "NOTE-WBEX" which is europe-only. If you're interested in countries covered, it's best to look at "NOTE-NBGL": https://dev.blues.io/hardware/notecard-datasheet/note-nbgl-5...
Comment linking /hardware/notecard-datasheet/note-nbgl-500/
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Submitted How We Unit Test Embedded C Code at Blues as a story · 4 points
HN discussion> hardware that's vendor-locked to a cloud service is a risky move. AFAIK from an above comment by @rozzie the protocol is open and the domain can be changed. So it should be possible for someone to write a self hostable server https://dev.blues.io/reference/notecard-api/hub-requests/#hu... https://github.com/blues/note
Comment linking /reference/notecard-api/hub-requests/
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Submitted Ditch LiPos: Try LICs for IoT Backup Power Instead as a story · 3 points
HN discussionHonestly, our thanks to Google's WebSerial folks who helped us to deliver the experience. It's quite wonderful. http://dev.blues.io
Comment linking /
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Submitted Li-SOCl2 vs. LiPo in IoT Applications as a story · 1 points
HN discussionhttps://dev.blues.io/hardware/notecard-datasheet/note-wbex-5...
Comment linking /hardware/notecard-datasheet/note-wbex-500/
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Submitted How We Unit Test Embedded C Code at Blues as a story · 1 points
HN discussionWith this offer of $49 for "10 years of cellular" (and 500Mb data [1]) included, I wonder which LTE network is expected to provide and support that connectivity for that long? Something like this could be a good candidate for what the Helium Network (and similar) are intending to do. [1] : https://dev.blues.io/hardware/notecard-datasheet/note-wbex-5...
Comment linking /hardware/notecard-datasheet/note-wbex-500/
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Yes, if you use our Notehub there is a free tier, and higher tiers are still very reasonable. (It does cost money to run infrastructure.) That said, although we don't talk much about it, the HN crowd may be interested in knowing that this exists: https://github.com/blues/note If you want to use the Notecard and you like Golang, you can spin up your own server and switch the notecard to speak with it via the "host" f…
Comment linking /reference/notecard-api/hub-requests/
on “Ray Ozzie's latest venture is a cheap IoT board with flat rate connectivity”Yes, as a FF user it’s becoming more and more clear that FF is falling behind on implementing new APIs. It’s frustrating having to keep Chrome around to load certain web apps. I ran into this specific API following the great blues wireless tutorial (cell connectivity cards and dev cards with ESP32 support) which only works in Chrome https://dev.blues.io/get-started/quickstart/notecarrier-af/
Comment linking /get-started/quickstart/notecarrier-af/
on “Show HN: Flash your ESP32 from the browser using JavaScript”