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Lab Notes
Personal blog · idatum.netsystemshardware
Lab Notes is a personal blog at idatum.net about systems and hardware. Since 2023, 3 different Hacker News readers have linked it 4 times. It is still writing: the last post was on 2024-12-26, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
HN readers link this blog for a DIY battery-powered front gate sensor built with an ESP-01s and MQTT. A commenter notes a single CR123A battery has lasted over 7 months while still reading 3.1V or more.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
What Hacker News says?
Battery powered home front gate sensor using an ESP-01s and MQTT. It's simple and I'm impressed that a single CR123A battery has lasted now 7+ months and still reading >= 3.1V. https://www.idatum.net/remote-front-gate-sensor.html
Comment linking /remote-front-gate-sensor.html
on “Ask HN: What have you built with ESPHome, ESP8266 or similar hardware”Submitted NetBSD 10 on a Pinebook Pro laptop as a story · 39 points
HN discussionSubmitted Running NetBSD 10.1 on a 1998 Toshiba laptop as a story · 20 points
HN discussionSubmitted Upgrading from NetBSD 5.1 to 10_RC1 as a story · 4 points
HN discussion