Beep Boop, Fastboot

The Year of the Zephyr Router

* A reminder to fill out the Zephyr Developer Survey 2026 [https://zephyrproject.org/devsurvey2026] before it closes at the end of June. Thanks in advance! * iBattery SDK [https://github.com/aliaksandr-liapin/ibattery-sdk], a Zephyr-friendly battery intelligence layer with software-side state-of-charge experiments * ZMK coredump experimentation [https://github.com/zmkfirmware/zmk/pull/3370] using coredump subsystem flash backend for persistent post-crash diagnostics * Fresh documentation for iterable sections [https://docs.zephyrproject.org/latest/kernel/iterable_sections/index.html] * ESP32 power-down support [https://github.com/zephyrproject-rtos/zephyr/pull/107344] for better CPU and peripheral power management * The board catalog can now expose and search by RAM and flash size [https://docs.zephyrproject.org/latest/boards/index.html] * IPv4 NAT support [https://github.com/zephyrproject-rtos/zephyr/pull/109809] * min-len/max-len [https://github.com/zephyrproject-rtos/zephyr/pull/109854] properties for better Devicetree binding validation * A generic charlieplex LED matrix driver [https://github.com/zephyrproject-rtos/zephyr/pull/110137] * Color dithering support [https://github.com/zephyrproject-rtos/zephyr/pull/109870] for palette-backed displays, including six-color e-paper panels * X-NUCLEO-WBA25A1 [https://docs.zephyrproject.org/latest/boards/shields/x_nucleo_wba25a1/doc/index.html], a Bluetooth 6 expansion shield with UART/SPI HCI options * QEMU Arm Cortex-A72 [https://github.com/zephyrproject-rtos/zephyr/pull/109229] support for Raspberry Pi 4-style emulation work * ArduCam Mega SPI Camera Shield [https://docs.zephyrproject.org/latest/boards/shields/arducam_mega/doc/index.html] * M5Stack PaperColor [https://docs.zephyrproject.org/latest/boards/m5stack/m5stack_paper_color/doc/index.html], with a Spectra 6 full-color e-paper display and PMIC support * nRF93M1 DK [https://docs.zephyrproject.org/latest/boards/nordic/nrf93m1dk/doc/index.html], a compact Nordic LTE Cat 1 bis development kit * ESP32-P4 support landed, with ESP32-P4-Function-EV-Board [https://docs.zephyrproject.org/latest/boards/espressif/esp32p4_function_ev_board/doc/index.html] as the first board supported * Analog Devices Low-Speed Mixed-Signal Playground [https://docs.zephyrproject.org/latest/boards/shields/adi_lsmspg/doc/index.html] for ADC/DAC-heavy analog experiments * Linus Torvalds' GuitarPedal [https://github.com/torvalds/GuitarPedal] project * USB2CANFDV2 [https://docs.zephyrproject.org/latest/boards/weact/usb2canfdv2/doc/index.html], a tiny WeAct USB-to-CAN-FD board with isolated CAN * Submit ideas for the Zephyr Workshop 2026 [https://docs.google.com/forms/d/e/1FAIpQLSf0X_jTAaiE1jLjWxXeOCS6x-s16Wd1JjDvGMAL4iVBpluBLQ/viewform], and one more nudge to fill out the developer survey [https://zephyrproject.org/devsurvey2026] :) Join us on Discord! // #podcast at https://chat.zephyrproject.org

Beep Boop, Fastboot

* Please take 5-10 min to fill out the Zephyr Developer Survey [https://linuxfoundation.research.net/r/G8QXM9L] if you haven't already! * An Ada runtime for Zephyr [https://gitlab.com/close-hauled/light-tasking-zephyr] * Composite fuel gauge [https://docs.zephyrproject.org/latest/build/dts/api/bindings/fuel-gauge/zephyr%2Cfuel-gauge-composite.html] support for battery estimation without a dedicated fuel-gauge IC * Golioth's local shell [https://blog.golioth.io/local-shell-talks-smp-to-your-devices-over-web-serial] talks SMP to devices over Web Serial, with a live demo at local-shell.golioth.dev [https://local-shell.golioth.dev/] * USB Fastboot [https://github.com/zephyrproject-rtos/zephyr/pull/109564] support in the works * ESP32-P4 [https://github.com/zephyrproject-rtos/zephyr/pull/109794] support coming, because apparently ESP32 can also mean "no Wi-Fi" * The new buzzer subsystem [https://docs.zephyrproject.org/latest/hardware/peripherals/buzzer.html], and thoughts on RTTTL [https://en.wikipedia.org/wiki/Ring_Tone_Text_Transfer_Language]-style ringtone playback * DT_NODELABEL_C_TOKEN [https://github.com/zephyrproject-rtos/zephyr/pull/86973], for retrieving devicetree node labels as C tokens * West snippets [https://github.com/zephyrproject-rtos/zephyr/pull/107125], including listing and shell completion support * TAD2144 [https://github.com/zephyrproject-rtos/zephyr/pull/107994] TMR angle sensor driver * TMP451 [https://github.com/zephyrproject-rtos/zephyr/pull/108384] temperature sensor driver, including remote temperature sensing use cases * ESP32 I2C target mode [https://github.com/zephyrproject-rtos/zephyr/pull/109299] support * Nordic USBHS and BC1.2 [https://github.com/zephyrproject-rtos/zephyr/pull/106759] battery charging support * AD5529R [https://docs.zephyrproject.org/latest/boards/shields/eval_ad5529r_ardz/doc/index.html] high-voltage DAC shield * LilyGO T-Deck [https://docs.zephyrproject.org/latest/boards/lilygo/t_deck/doc/index.html] support, a keyboard-and-display ESP32-S3 LoRa device * Oh, did we mention the Developer Survey [https://zephyrproject.org/devsurvey2026]? Join us on Discord! // #podcast at https://chat.zephyrproject.org

The Zephyrtastic Episode

* Build there, flash here [https://github.com/Mattemagikern/Lace/blob/master/tether] workflow for remote builds and local flashing * A Zephyr-native Meshtastic stack [https://github.com/kartben/meshtastic-zephyr], with LoRa, Protobuf, GNSS, sensors, MQTT and more * minmax.h [https://github.com/zephyrproject-rtos/zephyr/pull/109231] cleanup for the new lowercase min/max macros * Min/max constraints [https://github.com/zephyrproject-rtos/zephyr/pull/107190] for devicetree binding properties * BCM2711 mailbox controller [https://github.com/zephyrproject-rtos/zephyr/pull/107536] support for Raspberry Pi * nsim_mount [https://github.com/zephyrproject-rtos/zephyr/pull/107662], a native_sim filesystem for mounting host directories * A new DALI lighting subsystem [https://github.com/zephyrproject-rtos/zephyr/pull/88128] * DT_DESCENDANT_NUM_ON_BUS [https://github.com/zephyrproject-rtos/zephyr/pull/96213] devicetree helper * CS40L26/27 [https://github.com/zephyrproject-rtos/zephyr/pull/106934] haptic driver support * Titan Micro TM6605 [https://docs.zephyrproject.org/latest/boards/shields/dfrobot_gravity_tm6605/doc/index.html] LRA haptic driver * LP586x [https://github.com/zephyrproject-rtos/zephyr/pull/108801] I2C LED matrix driver * New and updated boards: Arduino Nesso N1 [https://github.com/zephyrproject-rtos/zephyr/pull/108505], Wio Tracker L1 [https://docs.zephyrproject.org/latest/boards/seeed/wio_tracker_l1/doc/index.html], W6100-EVB-Pico2 [https://docs.zephyrproject.org/latest/boards/wiznet/w6100_evb_pico2/doc/index.html], KC868-A8 [https://docs.zephyrproject.org/latest/boards/kincony/kincony_kc868_a8/doc/index.html] * The Zephyr Developer Survey 2026 [https://zephyrproject.org/devsurvey2026] is open! * The Documentation Working Group RFC and Robotics WG have been created [https://github.com/zephyrproject-rtos/zephyr/wiki/Zephyr-Committee-and-Working-Groups] * Upcoming Zephyr meetups [https://www.zephyrproject.org/events/] in London, Wrocław, Vienna, Sapporo, Lyon, and more Join us on Discord! // #podcast at https://chat.zephyrproject.org

My IPv6 Mouse Runs SSH

* Search boards by available RAM/Flash [https://github.com/zephyrproject-rtos/zephyr/pull/108888] in the board catalog. * New Documentation Working Group RFC [https://github.com/zephyrproject-rtos/zephyr/issues/109060] * The very important days without GitHub incident [https://www.dayswithoutgithubincident.com/] counter * Daniel Stenberg on curl, AI reports, and high-quality chaos [https://daniel.haxx.se/blog/2026/04/22/high-quality-chaos/] * Mythos finding a curl vulnerability [https://daniel.haxx.se/blog/2026/05/11/mythos-finds-a-curl-vulnerability/] * Shell alias support [https://github.com/zephyrproject-rtos/zephyr/pull/107542] * A proposed buzzer subsystem [https://github.com/zephyrproject-rtos/zephyr/pull/108911] for portable beeps and tones * Reversing devicetree dependencies [https://github.com/zephyrproject-rtos/zephyr/pull/108892] for tricky initialization-order cases * HTTP/3 server support [https://github.com/zephyrproject-rtos/zephyr/pull/106359] on top of QUIC * SSH support [https://github.com/zephyrproject-rtos/zephyr/pull/107110], including a shell backend * IPv4 routing [https://github.com/zephyrproject-rtos/zephyr/pull/108520] support in Zephyr's networking stack * MMIO latch GPIO [https://github.com/zephyrproject-rtos/zephyr/pull/105732] driver * New boards: Pico Ultra [https://docs.zephyrproject.org/latest/boards/luckfox/pico_ultra/doc/index.html], Trenz Electronic TE0950 [https://docs.zephyrproject.org/latest/boards/trenz/te0950/doc/index.html], SC-OBC Module V1 [https://docs.zephyrproject.org/latest/boards/sc/scobc_v1/doc/index.html], and Heltec T114 v2 [https://docs.zephyrproject.org/latest/boards/heltec/heltec_t114_v2/doc/index.html] * Don't forget the CFP for Zephyr Developer Summit [https://sessionize.com/open-source-summit-europe26] / Open Source Summit Europe! Join us on Discord! // #podcast at https://chat.zephyrproject.org [https://chat.zephyrproject.org/]

Smart Amps and Smarter Docs

* Valve publishes Steam Controller 3D files [https://gitlab.steamos.cloud/SteamHardware/SteamController] and STEP/STL models * The weekly "is GitHub broken? [https://www.githubstatus.com/]" weather forecast * cpu_freq thermal cap constraints [https://github.com/zephyrproject-rtos/zephyr/pull/108242] for runtime frequency scaling * GPIO keys shutdown behavior [https://github.com/zephyrproject-rtos/zephyr/pull/108294] and low-power pin handling * Twister multi-DUT testing [https://docs.zephyrproject.org/latest/develop/test/twister.html#twister-multi-duts-testing] for coordinated tests across multiple devices * DEVICE_API_EXTENDS [https://github.com/zephyrproject-rtos/zephyr/pull/106371] for devices exposing multiple APIs * More options for HTTP client shell commands [https://github.com/zephyrproject-rtos/zephyr/pull/108229] * TAS2563 [https://github.com/zephyrproject-rtos/zephyr/pull/103148] I2S smart amplifier driver * FDC1004 [https://github.com/zephyrproject-rtos/zephyr/pull/107233] 4-channel capacitance sensor * Renesas SLG47910 FPGA [https://github.com/zephyrproject-rtos/zephyr/pull/107551] driver * Kapa.ai [https://www.kapa.ai/] chatbot now live in the Zephyr documentation [https://docs.zephyrproject.org/latest/] * New shields and boards: M5Stack Unit Gesture [https://docs.zephyrproject.org/latest/boards/shields/m5stack_unit_gesture/doc/index.html], Arduino Nesso N1 [https://docs.zephyrproject.org/latest/boards/arduino/nesso_n1/doc/index.html], Tomu [https://docs.zephyrproject.org/latest/boards/kosagi/tomu/doc/index.html], XIAO ESP32C5 [https://docs.zephyrproject.org/latest/boards/seeed/xiao_esp32c5/doc/index.html], FlySky FS-i6S [https://docs.zephyrproject.org/latest/boards/flysky/fs_i6s/doc/index.html], Alif Balletto B1 [https://docs.zephyrproject.org/latest/boards/alif/balletto_b1_dk/doc/index.html], and reTerminal E1003 [https://docs.zephyrproject.org/latest/boards/seeed/reterminal_e1003/doc/index.html] * CFP is open [https://events.linuxfoundation.org/open-source-summit-europe/program/cfp] for Open Source Summit Europe / Zephyr Developer Summit Join us on Discord! // #podcast at https://chat.zephyrproject.org [https://chat.zephyrproject.org/]