The Amp Hour Electronics Podcast

#715 – Shiny New Pebble with Eric Migicovsky

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Welcome Eric Migicovsky of Pebble!

  • Pebble is back after Eric worked with Google to open source PebbleOS and he reaquired the naming rights
  • Eric returns to the hardware space after 7 years, including working at yCombinator, a famous accelerator for early stage startups, and on Beeper, a cross platform app for messaging.
  • While discussing the difficulties of hardware project, Chris brought up a recent post about a high wattage lamp project HN
  • One thing Eric likes about hardware projects vs software is that “hardware projects can be done” as in they have a defined end state
  • A more recent project is a smart ring – The Index 01.
  • The non-replaceable battery is driven by the product specs, also the need for reliability
  • The ring doesn’t immediately need to be in range of a phone, it syncs the memory after the fact
  • Pebble is no longer a VC backed startup with a subscription model, so that changes a lot of constraints
  • Initially they sold 2 million watches, and 250 million in sales
  • Eric is driven by “gadgets”. He read “pen computing” and “popular mechanics” as a kid
  • Consumer companies vs other types (and why Eric likes the former)
  • Pebble went through different phases
  • The team spent 6 months in China, designing the first consumer version and working directly with factories
  • CTO of (original) Pebble, Andrew Witte, was a somewhat early guest of The Amp Hour
  • How much did the China ecosystem drive design decisions?
  • There was no such thing as a smartwatch factory (but are there ever now!)
  • The book Apple in China is supposed to be a great read and mirrors the Pebble Experience
  • We heard from Chrissy Meyer when she was on the show about working with the Apple Watch manufacturing proces
  • Water proof methods codeveloping in China
  • It’s an interative process of submerging designs in a glass vessel with pressure and bubbles seep out of the device at different points
  • The remedy? According to Eric: “More Glue” 😀
  • Eric shares his process on a YouTube channel called Tick Talk (not to be confused with the shortform video site)
  • There is a video with the CEO of SiFli, makers of the Bluetooth chip that is in the most recent Pebble devices
  • One interesting feature is a custom bus to the Sharp-made ePaper-like screen used onboard
  • FreeRTOS pebble OS
  • What is PebbleOS?
  • It’s targeted at an m33 class ARM chip and the kernel is FreeRTOS
  • The bluetooth stack is nimBLE
  • Eric went back and forth on whether to port to Zephyr for the Bluetooth stack and hw support from vendors like Nordic Semiconductor
  • The Index 01 ring is Dialog Semiconductor (now part of Renesas) part
  • One challenge is that rings have different sizes…so they mill the rings based on orders. The larger rings get an extra battery!
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    The Amp Hour Electronics PodcastBy The Amp Hour (Chris Gammell and David L Jones)
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