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Comment:Zepto is on J7 (/dev/i2c-3): move defaults there, run both Qwiic buses at 100 kHz, drop the J6 banner

The logger's cable is in J7, not J6; its fixed 'I2C monitor J6' banner hid that. zepto-bridge, its unit, sao-demo and both flash scripts now default to /dev/i2c-3. The overlay matches the badge: both buses 100 kHz.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUH8KMkqwN396ebKzNRNvE

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User & Date: x86-1-interactor 2026-11-08 03:40:52.097
Context
2026-11-08
03:41
TODO: the logger is confirmed working on J7 at 100 kHz

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUH8KMkqwN396ebKzNRNvE check-in: a822b6edd5 user: x86-1-interactor tags: mechanical-turk-crystal-build

03:40
Zepto is on J7 (/dev/i2c-3): move defaults there, run both Qwiic buses at 100 kHz, drop the J6 banner

The logger's cable is in J7, not J6; its fixed 'I2C monitor J6' banner hid that. zepto-bridge, its unit, sao-demo and both flash scripts now default to /dev/i2c-3. The overlay matches the badge: both buses 100 kHz.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUH8KMkqwN396ebKzNRNvE check-in: ee3ce4c047 user: x86-1-interactor tags: mechanical-turk-crystal-build

02:49
ZeptoFlashing: the maintainer's bb-imager-rs fork is the known-good RESET/BSL reference

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUH8KMkqwN396ebKzNRNvE check-in: 04d70a8a20 user: x86-1-interactor tags: mechanical-turk-crystal-build

Changes
Unified Diff Side-by-Side Diff Patch
Changes to badge-demo/PROGRESS.md.
Changes to badge-demo/TODO.md.
Changes to badge-demo/bridge/src/zepto_bridge.cr.
Changes to badge-demo/docs/Architecture.md.
Changes to badge-demo/docs/MechanicalTurkDemo.md.
Changes to badge-demo/docs/ZeptoFlashing.md.
Changes to badge-demo/firmware/zepto/examples/baremetal/i2c_sniffer/src/sniff_display_ips2.c.
Changes to badge-demo/firmware/zepto/scripts/flash_zepto_bsl.sh.
Changes to badge-demo/overlays/beaglebadge-qwiic-i2c.dtso.
Changes to badge-demo/sao/README.md.
Changes to badge-demo/sao/controller/sao_demo.cr.
Changes to badge-demo/sao/controller/transports.cr.
Changes to badge-demo/scripts/flash_zepto_bsl_direct_i2c.py.
Changes to badge-demo/systemd/zepto-bridge.service.