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You are here: Home / Radio Show / #380 – Just Terrestrial and Space Things

#380 – Just Terrestrial and Space Things

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Yes, it’s true. Dave and Chris talk about IoT in earnest, mostly because Chris brought it up.

  • See below (or use this link) to take our yearly-ish survey for a chance to win a 1000x from Keysight. Also win more during the Keysight Wave event (formerly Scope Month)
  • Dave and David are testing the lifetime of a range switch using a jig.
  • Using the HY3131 datasheet you could in theory write your own firmware for the 121GW. An EEVblog community member started reverse engineering the firmware.
  • FOSDEM
  • Tjeerd in the background making a face at Chris showing hardware 😀
  • KiCad 5 Announcements
  • Chris is looking to talk to people doing KiCad manufacturing. Sign up to get notified about future discussions here.
  • Richard Ginus (past guest) helped design the TWTG / TTN gateway. He did a better job of explaining it than Chris does here. There is an EU version (868 MHz) and a US/Aus version (915 MHz). Dave was looking at this lower cost one.
  • Jereon on the show talking about the ESP32.
  • LoRa stuff by Andreas Spiess, including super cheap gateways. You can get them here as well (but watch the video for caveats about them).
  • SigFox is a similar offering but with a reversed model to TTN (charge for access to the towers)
  • MickMake does great videos with weekly roundups of new boards, including lots of connected products.
  • Particle announced their new mesh products! Each board has an nRF52, which uses OpenThread to create the mesh (AFAIK).
  • Don’t use Iota for IoT (apparently)
  • Ben Heck is moving on! But you can try out for his job
  • Circuit boards…in spaaaaace!

Comments

  1. Keith Sherry says

    February 20, 2018 at 11:44 pm

    LoRa is not a protocol- just the transmit / receive technology. MQTT is the preferred protocol, which is much lighter than e.g. HTTP. If you sent 1 byte of temp data, you would be a couple of minutes just transferring the HTTP header at LoRa’s slowest baud rates (circa 10s bps). It is the baud rate that changes the closer / further the sensor is to the gateway.

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