VirtualTam's bookmarks

1. ESPARGOS - ESP32-based WiFi sensing array 2025-02-17

   tags: embedded, microcontroller/espressif/esp32, network/wireless/wifi, physics, programming/python, visualization

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   • Dataset: Four phase- and time-synchronous ESPARGOS antenna arrays in a lab room
   • ESPARGOS/pyespargos - Python library for working with the ESPARGOS WiFi channel sounder
   • This ESP32 Antenna Array Can See WiFi
   • Source Code for Paper "Augmenting Channel Charting with Classical Wireless Source Localization Techniques"
   • Phased Arrays - Steering and the Antenna Pattern | An Animated Intro to Phased Arrays
2. NIST’s Cesium Fountain Atomic Clocks 2025-01-24

   tags: atomic, laser, physics/temperature, space, time/clock

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   • NIST-F1 Cesium Fountain Clock, 1999-12-29
   • NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock, 2014-04-03
   • Advanced Laser Cooling for the Atomic Space Clock, 2021-10-12
   • Primary Atomic Reference Clock in Space
   • Laser Cooling
3. AI Flame Graphs 2025-01-20

   tags: artificial-intelligence, intel, performance/profiling, programming/c++, programming/python, visualization

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   AI developers think about their bit of code, but with AI Flame Graphs they can now see the entire stack for the first time, including the HW, and many layers they don't usually think about or don't know about. It basically looks like a pile of gibberish with their code only a small part of the flame graph.

   This reaction is similar to people's first experiences with CPU flame graphs, which show parts of the system that developers and engineers typically don't work on, such as runtime internals, system libraries, and kernel internals.

4. PostgreSQL - What is a valid use case for using TIMESTAMP WITHOUT TIME ZONE? 2025-01-14

   tags: database/postgresql, time/timezone

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   • Date/Time Types
   • Should I store UTC timestamps or localtime for shifts
5. Rust In Space! How Rust is powering next-generation space mission simulators 2025-01-11

   tags: astrodynamics, programming/rust, space, time, time/clock

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   • Angus Morrison: "How Rust is Powering Next-Generation Space Mission Simulators" | RustConf 2024
   • Slides
   • lox-space/lox - Oxidized Astrodynamics
6. Rust needs a web framework for lazy developers 2024-12-30

   tags: database, framework, network/http, programming/html, programming/rust, web

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   The benefits are there: you get wonderful type system, wonderful performance, and build times that give you back those coffee breaks you used to get while your code compiled.

   • ~ntietz/newt - Nicole's Web Toolkit
   • Are we web yet?
7. Self-hosted online collaborative drawing platform Excalidraw 2024-11-25

   tags: database/mongodb, database/sqlite, diagram, image/png, image/svg, network/websocket, programming/json, programming/node.js, programming/typescript, schema, self-hosting, software-engineering/uml

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   • Self-hosted online collaborative drawing platform Excalidraw (alternate version on Medium)
     • alswl/excalidraw-collaboration - Excalidraw with collaboration feature, self-hosting, and only one-click deploy
     • alswl/excalidraw-storage-backend - Storage for scenes, images and collaboration rooms
     • alswl/excalidraw.alswl.com - Custom static version featuring a Chinese font with handwriting style
     • Someone0nEarth/excalidraw-self-hosted - A docker-compose configuration for a fully self-hosted excalidraw stack, a collaborative whiteboard solution
   • r/selfhosted - Excalidraw
     • excalidraw/excalidraw-room - Example collaboration server
     • Comment on excalidraw/excalidraw/issues/4993 - Building your own Docker images
     • excalidraw/excalidraw/issues/6506 - Tutorial for Træfik
   • PatWie/excalidraw-complete - Self-host Excalidraw with a single Go binary - Supports multiple storage options and real-time collaboration
8. splatviz - Full python interactive 3D Gaussian Splatting viewer for real-time editing and analyzing 2024-11-22

   tags: image/2d, programming/python, user-interface/imgui

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   • splatviz - 3DGS visualization tool for live code editing
   • splatviz - Live Tracking and Editing during 3DGS Training
9. Building SimCity - How to Put the World in a Machine 2024-11-22

   tags: architecture/urban-planning, book, city, game/sandbox, game/sim-city, game/simulation, programming/c++, society/demographics

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   • Discussion on Hacker News
   • Book report by Steward Brand
   • ROMchip Presents: Building SimCity: A Conversation with Will Wright and Chaim Gingold
   • EA Sim City 2000 Will Wright Interview
   • Game Developer Magazine - April/May 1995
   • Stanford Libraries - Interfacing to Microworlds, Will Wright, Maxis
   • Will Wright on Designing User Interfaces to Simulation Games (1996) (2023 Video Update)
   • Will Wright and Brian Eno - Generative Systems
   • Playing with Time | Brian Eno and Will Wright
   • SimHacker/MicropolisCore - SimCity/Micropolis C++ Core

   Related books:

   • Racing the Beam - The Atari Video Computer System
   • Minitel - Welcome to the Internet
   • Developer's Dilemma: The Secret World of Videogame Creators
   • Silicon Second Nature - Culturing Artificial Life in a Digital World
10. SimCities and SimCrises - Transcript of the keynote for the 2017 International City Gaming Conference 2024-11-22

    tags: architecture/urban-planning, city, game/sandbox, game/sim-city, game/simulation, politics, research, science-fiction, society/demographics, weather

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    • Matteo Brittanti - How to get rid of homeless? - A 600-page epic split in two volumes documenting the so-called “homeless scandal” that affected the newly released game SimCity (Maxis/Electronic Arts, 2013)
    • Stanisław Lem - The Cyberiad
    • MIT - Urban Intervention Simulation (archive)
    • MIT - City Science Research Group
    • The Landlord's Game, a realty and taxation game intended to educate users about Georgism
    • Invisible Cities, prose poems describing 55 fictitious cities, many of which can be read as commentary on culture, language, time, memory, death, or human experience
11. GPIOViewer - Arduino Library to see live GPIO Pins on ESP32 boards 2024-11-18

    tags: embedded, embedded/arduino, http, microcontroller/espressif/esp32, microcontroller/espressif/esp8266, network/wireless/wifi

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    • Live GPIO Pin Monitoring!
    • Watch ESP32’s GPIO status in real-time in a web browser
    • Charles Giguere's GPIOViewer Library Gives You "X-Ray Vision" Into Espressif ESP32-Based Projects
    • me-no-dev/ESPAsyncWebServer
12. Educational Technology Clearinghouse - Resources 2024-11-10

    tags: education, geography, image, map, presentation

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    • Clipart ETC - Illustrations
    • Clippix - Photos and pictures
    • Maps - Historic maps spanning many different time periods
    • Presentations - Backgrounds, templates, letters, frames, and buttons
13. awesome-limits - System limits that, when breached, led to someone having a bad time 2024-11-01

    tags: distributed-system, infrastructure/site-reliability-engineering, linux, network, observability

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14. BeamNG.tech - A real time soft-body physics with a comprehensive, expandable platform 2024-10-13

    tags: artificial-intelligence, car, image, programming/c++, programming/lua, programming/python, research

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    • BeamNG.tech Technical Paper (2021-06-21)
    • Publications
    • BeamNG.tech Blog
    • Project References
    • BeamNG/BeamNGpy - Python API for BeamNG.tech
    • BeamNG/beamng-ros2-integration - Robot Operating System integration
15. InfluxDB Tech Tips — Optimizing Flux Performance 2024-06-01

    tags: observability/time-series/influxdb

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    • Top 5 Hurdles for Flux Beginners and Resources for Learning to Use Flux
    • Top 5 Hurdles for Intermediate Flux Users and Resources for Optimizing Flux
    • Optimize Flux queries
    • Sort and limit data with Flux
16. Everything I need to know about Influxdb, Grafana and Flux 2024-05-04

    tags: observability/grafana, observability/time-series/influxdb, programming/python, programming/python/numpy

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17. All you need is Wide Events, not "Metrics, Logs and Traces" 2024-04-19

    tags: database, distributed-system, observability, observability/logging, observability/metrics, observability/tracing

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    • Scuba: Diving into Data at Facebook - International Conference on Very Large Data Bases (VLDB) (PDF, Talk)
    • HN discussion
    • Axiom - Stop sampling, observe every event
      • Adaptive _time compression — A database hacker story
    • Eventrelay - An event streaming/storage system for the rest of us
    • Honeycomb - Identify Outliers
    • Rill - Fast operational dashboards that your team will actually use
    • Strangeloop 17 - Why We Built Our Own Distributed Column Store by Sam Stokes
18. 1500 Archers on a 28.8: Network Programming in Age of Empires and Beyond 2024-04-11

    tags: game/age-of-empires, game/multiplayer, game/real-time-strategy, network

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19. How to use PostgreSQL for (military) geoanalytics tasks 2024-03-31

    tags: country/russia, country/ukraine, database/postgresql, geography/gis, map, nasa/earthdata, war

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    • From Map to Reality: Using PostGIS in Warfare (PDF)
    • NASA Earthdata - Full and open access to NASA’s collection of Earth science data for understanding and protecting our home planet
    • Visible Infrared Imaging Radiometer Suite (VIIRS) Active Fire detection
    • PostgreSQL - GiST - Generalized Search Tree
    • PostgreSQL - SP-GiST - Space-partitioned GiST
    • H3 - Hexagonal hierarchical geospatial indexing system
    • zachasme/h3-pg - PostgreSQL bindings for H3
20. How I keep myself Alive using Golang 2024-03-31

    tags: diabetes, food, health, observability/grafana, observability/time-series/prometheus, programming/go

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    • Tidepool - An open source, nonprofit effort building an open data platform to make diabetes data more accessible, actionable, and meaningful