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JanOS: Turn your phone into an IoT board

Screenshot of janos.io captured 2026-07-20
Page preview · captured 2026-07-20

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

Top comments

This appears to be based on Firefox OS (aka "Boot to Gecko" B2G). Unfortunately, that was terminated Sept. 2016 [1]. The links to FOS on the JanOS site (such as "View porting instructions" on the Device List page) no longer work, though there is still a home page on Mozilla [2]. Edit: JanOS project looks to be zombied. The "Read more on our blog" link on the front page returns "Server Not Found". [1] https://groups.google.com/g/mozilla.dev.fxos/c/FoAwifahNPY/m... [2]…

mgsouth·164-point thread·

I feel like this is something that needs to happen. The observation about $80 GSM shields is spot on. Amazing things would happen if we could have a $30 IoT board with built-in LTE and a country-by-country easy-to-follow guide to how to buy a SIMM and get online. My one critique of the project is that I think the most important part (from a marketing perspective) is the "make your own connected IoT board for cheap!". The OS part is…

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

HN stats

Breakout years
2

100+ points or 50+ comments

Total points
288

reference only — not used in Hall rules or ranking

Total comments
53

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2015-02-11Show HN: JanOS – A new OS that turns your smartphone into an IoT boardFirst breakoutjanjongboom12323
2016-09-27JanOS: Turn your phone into an IoT boardphantom_oracle10
2023-04-28JanOS: Turn your phone into an IoT boardBest thread · Latest 20+ point returndanboarder16430