Adafruit Industries

Deep Dive w/Scott: CircuitPython on nRF54LM20A

March 21, 2026·1h 3m
Episode Description from the Publisher

Join Scott as he shows off CircuitPython on the new nRF54LM20A, talks about how Claude Code continues to change the way he works and answers any questions folks have. Tim will fill in for Scott next week. Check out his Tuesday Deep Dives at 11am Eastern US. 0:00 Getting started 1:14 Hello and welcome to deep dive 2:22 NRF 54 lm20A demo running micropython 3:30 also shown adafruit Edge Badge AKA pygamer 4:20 ( Tim filling in next week / no Scott ) 5:05 nRF54LM20A bluetooth capable with NVM ( resistive RAM ) 7:00 nRF54H20 high power version 10:10 bringing it up with Zephyr 13:10 connect up the board - investigate warnings 14:30 discuss performance difference between CP on Zephyr vs native on board 16:00 SMP support (in future?) 17:30 Mixed feelings about Zephyr - startup, kconfig, device tree 18:30 LM20A - no bluetooth support in Zephyr yet 19:20 USB works, but note USB HID under zephyr 20:00 zephyr native simulator 21:15 support from LLMs does help 22:00 github actions 24:30 review issue #13803 29:00 using Salea logic analyzer / perfetto with agents 31:05 gifourchette https://github.com/tannewt/gitfourchette/tree/tannewt 35:50 worktree support also added / future change github integration / CI status 40:54 mailbag - m5stack PoE P4 - usb-ip access 44:50 m5stack Dial and Tab5, and M5 paper 48:06 xteink - magnets for phone 49:40 ST C562 nucleo with usb / and another board from ST 50:56 NXP IMX RT1180 - rt1186 lower cost dev board with 4 ethernet ports - 800MHz 54:00 zephyr supported board list 55:00 stm32 n657 59:05 i2c knobs - multimaster - to avoid polling - i3c may help 1:01:40 wrap up - out next week - thanks to Tim Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------

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