09-Feb-2022

Attendees

  1. @Thomas Watteyne

  2. @Austin Patel

  3. @Kristofer PISTER

  4. @David Burnett

  5. @Alex Moreno

  6. @Andrew Fearing

  7. @Fil Maksimovic

  8. @Mina Rady

Updates

  • @Austin Patel

    • @Joshua Alexander picking up 2 boards

    • motes → quik-pak → Digicom (Mo’s)

    • next is to verify all works without pins attached

    • verify whether any bubbling present

    • unclear whether we had a photo of the quik-pak’ed modules

    • Mo indicated he would use a lower-temp solder; he indicated he uses some “shielding” (when attaching surface-mount components?)

  • @Joshua Alexander confirms he will be able to test boards today

  • @Kristofer PISTER opaque epoxy has a higher temperature, putting it on the wirebonds but leaving the centre of the chip without epoxy may be possible

  • @Andrew Fearing points at https://www.qptechnologies.com/services/ic-assembly/encapsulation-options/

  • @Fil Maksimovic

    • trying to find the root cause of SCuM not be able to transmit to nRF: tone separation error, or chipping clock

    • using divided LC for the chipping clock, there is a 400ppm swing between “0’s” and “1’s”?

    • with access to GPIOs, would be easier, chip used is not wire-bonded completely

  • @David Burnett

    • looking at what probe station and wire bonder within driving distance

  • @Thomas Watteyne

  • @Mina Rady

    • PhD thesis defended Dec 9, 2021

    • Manuscript: Agile Multi-PHY Wireless Networking

    • some interesting deliverables:

      • g6TiSCH firmware: how to custom build your g6TiSCH/6DYN network? https://github.com/minarady1/openwsn-fw/tree/develop_FW-891

      • RPLSim: yet another RPL simulator: a lightweight discrete event RPL simulator in Python

        • Allowed us to answer the question "how to optimize for time-to-first-death"? (specially using multi-PHY integration)

        • Life-OF

        • Example configuration: run using a single-PHY network MRHOF and compare it to a multi-PHY network using Life-OF.