1. @Thomas Watteyne

  2. @David Burnett

  3. @Titan Yuan

  4. @Fil Maksimovic

  5. @Sara Faour

  6. @Kristofer PISTER

Action Items


  • workshop @Thomas Watteyne

    • thanks @David Burnett for filling in page

    • thanks @Fil Maksimovic for agreeing to write intro paragraph to CFP

    • we have a website! https://project.inria.fr/crystalfree/

    • rooms are booked for the 3 days Sep 12, 2023 - Sep 14, 2023

    • can we rename to “Invited Workshop on Crystal-Free Radios, Chip-Scale Systems and Swarms”?

  • @David Burnett

    • 5-bond SCuM board w/ 337 battery holder sent for mfg

      • Student (Luis) made an argument for GSG bonds instead of just S for antenna so the Poynting vector is in the direction of the wirebonds

    • Can likely get away with much cheaper ENIG surface finish

    • Found room temperature stored, room temperature cured silver epoxy w/ 10 min, 20 min or 4 hour working time https://www.mouser.com/ProductDetail/MG-Chemicals/8331D-14G?qs=doiCPypUmgEsDWzvEstgPw%3D%3D

    • Student (Jacob) has been extensively testing using only a single supply, will add tests at 1.4 V and 1.3 V soon and test from a 337 battery before sending out chips for wirebonding

    • Jacob also assembled a SCuM “kit” DB is taking to APL-UW in Seattle tomorrow

  • @Sara Faour / @Fil Maksimovic

    • attempt at using code to generate either a unique identifier, ideally PUF

    • extracting today 64 bits

      • code actually reads 8 times 8 bytes (64B), but no technical difficulty to read much more

    • sweep 900mV to 1.1V, same value

    • need to test against temperature

    • @Kristofer PISTER : ramp rate on the VDD voltage influences PUF initial state

    • PUF vs. indentifier: hamming distance and entropy, testing code

    • quite a bit of SOTA

    • code: https://github.com/Sara-Fa/scum-test-code/tree/develop/scm_v3c/applications/sram_read

    • Considering BLAKE2s (BLAKE optimized for 32 bit CPUs) hashing algorithm https://www.blake2.net/

      • BLAKE3 faster but designed for x86 architecture