- A reminder to please fill out the Zephyr Developer Survey 2026 before it closes at the end of June. Thanks in advance!
- iBattery SDK, a Zephyr-friendly battery intelligence layer with software-side state-of-charge experiments
- ZMK coredump experimentation using coredump subsystem flash backend for persistent post-crash diagnostics
- Fresh documentation for iterable sections
- ESP32 power-down support for better CPU and peripheral power management
- The board catalog can now expose and search by RAM and flash size
- IPv4 NAT support
min-len/max-lenproperties for better Devicetree binding validation- A generic charlieplex LED matrix driver
- Color dithering support for palette-backed displays, including six-color e-paper panels
- X-NUCLEO-WBA25A1, a Bluetooth 6 expansion shield with UART/SPI HCI options
- QEMU Arm Cortex-A72 support for Raspberry Pi 4-style emulation work
- ArduCam Mega SPI Camera Shield
- M5Stack PaperColor, with a Spectra 6 full-color e-paper display and PMIC support
- nRF93M1 DK, a compact Nordic LTE Cat 1 bis development kit
- ESP32-P4 support landed, with ESP32-P4-Function-EV-Board as the first board supported
- Analog Devices Low-Speed Mixed-Signal Playground for ADC/DAC-heavy analog experiments
- Linus Torvalds’ GuitarPedal project
- USB2CANFDV2, a tiny WeAct USB-to-CAN-FD board with isolated CAN
- Submit ideas for the Zephyr Workshop 2026, and one more nudge to fill out the developer survey 🙂
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Episode Summary
- Zephyr Developer Survey 2026: The episode opens, and almost closes, with a friendly nudge to fill out the developer survey before results start being shared with the community.
- iBattery SDK: The iBattery SDK prompted a follow-up to last week’s fuel-gauge discussion, with software-side battery modeling, state-of-charge estimates, telemetry, and Zephyr integration.
- ZMK Core Dumps: A draft ZMK pull request experiments with Zephyr’s flash-backed core dump support, making crash data survive resets and battery pulls.
- Iterable Sections: New iterable sections documentation turns one of Zephyr’s quietly important modularity mechanisms into something easier to understand and reuse in applications.
- ESP32 Power Management: ESP32 CPU and peripheral power-down support kicks off a discussion about battery-powered ESP32 use cases.
- Board Catalog Search: The Zephyr board catalog now exposes RAM and flash information, making it easier to search for boards that match real application constraints.
- IPv4 NAT: New IPv4 NAT support raises the obvious question: is this the year of Zephyr-powered routers?
- Devicetree Validation:
min-lenandmax-lenproperties give Devicetree bindings a cleaner way to express array length constraints, replacing some ad-hoc build assertions. - Display Work: A generic charlieplex LED matrix driver and new color dithering support bring useful improvements for LED matrices and limited-palette displays.
- Boards and Shields: The board tour includes the X-NUCLEO-WBA25A1, QEMU Arm Cortex-A72, ArduCam Mega SPI Camera Shield, and M5Stack PaperColor, from Bluetooth 6 to cameras and color e-paper.
- More Hardware: Also covered: the nRF93M1 DK, ESP32-P4-Function-EV-Board, Analog Devices Low-Speed Mixed-Signal Playground, and USB2CANFDV2.
- Guitar Pedal Cameo: Linus Torvalds’ GuitarPedal repo gets a quick mention while discussing analog boards, waveforms, and possible audio experiments.
- Zephyr Workshop 2026: The episode wraps with a call for workshop topic submissions for the one-day Zephyr workshop alongside the Zephyr Developer Summit in Prague.