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rbaron.net
Personal blog · rbaron.net/blog · on HN as r4phaprogramminghardware
rbaron.net is a personal blog at rbaron.net about programming and hardware. Since 2014, 10 different Hacker News readers have linked it 13 times, most often “Hacking a cheap fitness tracker bracelet”. It is still writing: the last post was on 2026-05-25, and you can follow it by feed.
Too few sampled comments (3) to say how often HN recommends it.?
Why HN links it
HN readers link rbaron.net for hands-on hacking of cheap wearables: reverse engineering a $3 smartwatch, hacking cheap fitness trackers, and building a DIY blood-glucose smartwatch. The comments mostly point to these posts as references.
Summarised by Claude from a sample of 3 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Software, electronics and building stuff.
Most-linked posts?
- Hacking a cheap fitness tracker bracelet3 people · 3 mentions · first linked 2018-05-28
- Building a panel out of e-ink electronic shelf labels2 people · 2 mentions · first linked 2022-08-01
- Reverse Engineering the M6 Smart Fitness Bracelet2 people · 2 mentions · first linked 2021-07-06
What Hacker News says?
You have 10$ chinese brand-able devices for that: https://rbaron.net/blog/2018/05/27/Hacking-a-cheap-fitness-t...
Comment linking /blog/2018/05/27/Hacking-a-cheap-fitness-tracker-bracelet.html
on “Google Buys Fitbit for $2.1B”Submitted Building a panel out of e-ink electronic shelf labels as a story · 229 points
HN discussionAwesome work building it all from scratch! Hate to be that guy, but was using something hackable like a PineTime ( https://pine64.org/devices/pinetime/ ) and doing a direct BLE connection to the device using the Blood Glucose Profile ( https://www.bluetooth.com/specifications/specs/glucose-profi... ) not an option? Another approach could be to hack one of those cheap fitness trackers ( https://rbaron.net/blog/2018/0…
Comment linking /blog/2018/05/27/Hacking-a-cheap-fitness-tracker-bracelet.html
on “Building a T1D smartwatch for my son from scratch”Submitted Hacking a cheap fitness tracker bracelet as a story · 153 points
HN discussionhttps://rbaron.net/blog/2021/07/06/Reverse-engineering-the-M... is the reverse engineering desc. he followed
Comment linking /blog/2021/07/06/Reverse-engineering-the-M6-smart-fitness-band.html
on “Porting Python to a $3 smartwatch [video]”Submitted Reverse Engineering the M6 Smart Fitness Bracelet as a story · 94 points
HN discussionIf you're interested in simulations in javascript, I wrote a small blog post and a toy project [0] about it. I would love some feedback! [0]: http://rbaron.net/blog/2014/01/02/Simulating-dynamic-systems...
Comment linking /blog/2014/01/02/Simulating-dynamic-systems-in-javascript.html
on “Double Pendulum in fewer than 100 lines of JavaScript”Submitted Building a Panel out of e-ink Electronic Shelf Labels as a story · 3 points
HN discussionHi, author here. I wrote a small introduction about simulating a super simple mass-spring-damper system using it [0]. This is only meant to be a fun weekends project, but I'm really interested in finding out what you guys think about it. Thanks! [0]: http://rbaron.net/blog/2014/01/02/Simulating-dynamic-systems...
Comment linking /blog/2014/01/02/Simulating-dynamic-systems-in-javascript.html
on “Show HN: My weekends project - a toy-sized Simulink-like tool in javascript”Submitted Simulating dynamic systems in javascript as a story · 3 points
HN discussionSubmitted Advent of code and 25 days of Haskell (2017) as a story · 2 points
HN discussionSubmitted Rbaron – Projects as a story · 1 points
HN discussionSubmitted A Slack bot for controlling our office's air conditioners as a story · 1 points
HN discussion