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wumms

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2017-05-11

Created

Recent Activity

  • Commented: "Kodak ran a nuclear device in its basement for decades"

    > In 1975, Kodak powered up the country’s first californium neutron flux multiplier (CFX) ... to provide Kodak R&D with an ample stream of neutrons for materials analysis. > If an X-ray shows you the crack in a pipe, neutrons will show you the leak.

  • Commented: "Humans have remote touch 'seventh sense' like sandpipers"

    > Remote touch allows the detection of objects buried under granular materials through subtle mechanical cues transmitted through the medium, when a moving pressure is applied nearby.

    > These findings confirm that people can genuinely sense an object before physical contact

    So, it’s just touch, relayed through grains of sand.

    Less clickbaity title: Humans have 'remote' touch like sandpipers, research shows

  • Commented: "ESP32 and Termux"

    If I telnet into an ESP32 via Termux, it doesn’t recognize \n. I haven’t found a solution yet. It works fine with other Linux consoles.

        void handleTelnet() {
      ...
      if (telnetClient && telnetClient.connected() && telnetClient.available()) {
        String cmd = telnetClient.readStringUntil('\n'); cmd.trim();
        if (cmd == "status") {
        ...
    EDIT: Thanks @yjftsjthsd-h and @detaro for your suggestions! I tried Telnet via tmux - it worked. Then I tried telnet directly, and it suddenly worked too. Turns out Arduino’s Telnet implementation is single-user only, and my dev machine’s reconnect loop kept the connection open; the working login just fooled me.

  • Commented: "Tumbleweed rover tests demonstrate technology for low-cost Mars exploration"

    The phys.org article mentions it: "[...] the team carried out static and dynamic tests in a wind tunnel with a variety of wind speeds and ground surfaces under a low atmospheric pressure of 17 millibars.

    Results showed that wind speeds of 9–10 meters per second were sufficient to set the rover in motion over a range of Mars-like terrains, including smooth and rough surfaces, sand, pebbles and boulder field."

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