18 min read
Building a custom ESP32 thermostat
A guided tour through the code of a battery-powered ESP32 thermostat with e-paper display, deep sleep, and remote control
esp32firmwareplatformiohome-automationbluetooth+8 more
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8 min read
Nearby peer discovery without GPS using environmental fingerprints
I propose a peer discovery technique to detect nearby devices by comparing similarity in their observed environments, such as WiFi or Bluetooth networks. Using locality-sensitive hashing and private set intersection, peers can compare their environments without disclosing the full details. With sufficient similarity between environments, peers can conclude they are near each other.
locality-sensitive hashingprivate set intersectionlibp2psoftwaregeolocation
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3 min read
A durable task primitive built on BullMQ
Building reliable task systems with BullMQ requires juggling queues, workers, and events, turning simple functions into scattered configuration. DurableTask solves this by wrapping BullMQ primitives into a single abstraction that gives any function automatic archiving, retries, scheduling, and complete execution history.
software
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5 min read
Advice for self-taught learners entering formal education
On how autodidacts can navigate the transition to formal higher education without losing their motivation and curiosity
education
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5 min read
Building a custom telescope mount with harmonic drives and ESP32
How I went from buying a €200 tracker to building a custom telescope mount with harmonic drives, ESP32, and way more engineering than necessary
hardwarepcb-designastrophotographyesp32telescope+2 more
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