High-Altitude Adventure with a DIY Pico Balloon

(spectrum.ieee.org)

39 points | by jnord 3 days ago

5 comments

  • pingou 4 hours ago
    Pretty cool, although it's polluting so hopefully it wouldn't become too popular (probably not).

    "And because such diminutive payloads don’t pose a danger to aircraft" even though they are small and wouldn't make a plane crash, I can imagine they would cause some damage if they ever enter a jet engine, although that would be unlucky as they would mostly fly higher than aircraft. I also wouldn't like it to fall on my head, but with the solar panels as depicted and the small weight I suppose it could somewhat glide.

    • voidUpdate 1 hour ago
      It also reminds me of the recent incident where an object (potentially a weather balloon) struck a plane windscreen and caused significant damage to it, as well as injuring one of the flight crew. I don't know if it would cause the same amount of damage given it's size, but hitting any solid object at cruising speed is sure to leave a mark
      • squeefers 1 hour ago
        shouldnt be cruising in the balloon lane then
  • SuperMouse 1 hour ago
    I'm currently thinkering of building a balloon with a 2.4GHz LoRa transmitter (SX128x) and a low-power STM32U microcontroller.

    Why?

    - You can repurpose 2.4GHz Wifi gear opening many doors

    - You can easily include volunteers dumping data from HF into a IP sink for telemetry. TTGO offers boards with 2.4GHz LoRa.

    - Theoretically you still can add a "low rate" 868MHz/433MHz and a "high rate" 2.4GHz for transmitting pictures and other stuff more quickly.

    - BOM friendly. As the balloon might get lost you have to plan a bit for costs.

    • iberator 1 hour ago
      lol. WPRS works like 10.000km per WATT on HF. You can't do it with 2.4ghz.

      Ham radio basics

      • SuperMouse 1 minute ago
        Yeah. 10.000km with a few bits fixed-structure payload.
  • bambax 3 hours ago
    This sounds so cool!

    > I’m a little puzzled about the balloons’ telemetry messages received on the WSPR network, as they have been few and far between.

    But wouldn't there be a way to send messages to Starlink satellites instead of WSPR? Is it a problem of power consumption? (It would be great to be able to transmit images, not just GPS pings).

  • ajxs 3 hours ago
  • mkarliner 3 hours ago
    QRPLabs sell even lighter trackers https://www.qrp-labs.com/u4b.html

    and AFAIK are the goto supplier for HAB (High Altitude Ballooning) enthusiasts.