Dave5

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  • We don’t need a DAC – ESP32 PDM Audio

    So, there’s no DAC on the ESP32-S3. You would think this would be a bit of a downer if if you want to get audio out and use an analog amplifier. But it’s actually surprisingly easy to output Pulse Density Modulated audio using Sigma Delta Modulation on the ESP32 and you can recover the audio signal by low…

  • ESP32-based Internet Radio Streamer

    So I entered my favorite internet radio’s URL, plus my WiFi credentials into the code and loaded it to my ESP32 using the Arduino IDE. Surely enough, I saw in my serial port that the ESP32 connected to my WiFi access point and then opened successfully the streaming radio station. I could see on my…

  • NASA will debut its mysterious x-59 ‘quiet’ supersonic aircraft at famous Lockheed Martin Skunk Works facility next week

    NASA has announced plans to unveil its X-59 quiet supersonic aircraft next week, the American space agency said in a statement on Friday. “NASA will provide live coverage as it reveals its X-59 aircraft at 4 p.m. EST on Friday, Jan. 12, as part of the agency’s Quesst mission to make commercial supersonic flight possible,” read a…

  • Scientists drilling into magma chamber for potentially unlimited energy

    Scientists in Iceland are steaming ahead with an ambitious project to drill straight down into a magma chamber that could provide not only the first direct look at the oceans of molten rock stewing miles beneath the Earth’s surface, but a revolution in geothermal energy that could potentially see the technology be used anywhere on…

  • Pokémon and Japanese Craft Traditions Unite in a Fantastic Exhibition of 70+ Works

    Two of Japan’s major cultural contributions converge in POKÉMON X KOGEI | Playful Encounters of Pokémon and Japanese Craft. On view at Japan House Los Angeles, the exhibition showcases more than 70 sculptures and installations that recreate the fantastical animated characters from Squirtle to Pikachu in ceramic, metal, fiber, and more.

  • This kinda sums up my disdain for techbros in general

  • PW 4: Productivity and tools

    My experience of using ChatGPT to assist in code mirrors this… i was a little slower for a week or so and then I accelerated away. The tools that are available to each of us are so powerful, so varied and so complex that even the free ones are ignored or misunderstood. We’re too busy…

  • Rocket Report: SpaceX’s record year; Firefly’s Alpha rocket falls short

    Welcome to Edition 6.25 of the Rocket Report! We hope all our readers had a peaceful holiday break. While many of us were enjoying time off work, launch companies like SpaceX kept up the pace until the final days of 2023. Last year saw a record level of global launch activity, with 223 orbital launch…

  • Pax Americana’s last gasp

    Pax Americana rests on two pillars: US military might and diplomatic power. By failing to rein in the scale of Israel’s actions in Gaza or in deterring Houthi attacks in the Red Sea, those pillars seem shaky. Bolstering them requires swift and decisive action from Joe Biden. The cost of continued relative inaction is simply…

  • Can the ‘Zoo Hypothesis’ Be Saved?

    Crawford and Schulze-Makuch ask a blunt question in the title of their paper in Nature Astronomy: ”Is the apparent absence of extraterrestrial technological civilizations down to the zoo hypothesis or nothing?” The zoo hypothesis posits that we are being studied by beings that for reasons of their own avoid contact. David Brin referred in his classic…