2026 Hackaday Supercon: Announcing Our First Round Of Speakers

DeviceTree For Hackers: Intro

A leaked Raspberry Pi DeviceTree file reveals hardware details of the Pi Zero 3W, including a BCM2711 chip, PCIe support, a power button, an extra LED, and an eMMC option. This serves as the entry point for an intro to DeviceTree, the format that tells Linux kernels what CPU, drivers, and interfaces a board has. DeviceTree source files (.dts, .dtsi) compile into binary .dtb/.dtbo files the kernel reads, and the device-tree-compiler package handles both compiling and decompiling. The guide covers includes, base files, and overlays, recommends learning from Raspberry Pi's overlay directory and repos like Radxa and Armbian, and warns that LLMs sometimes hallucinate overlay properties.

Quasi-Logarithmic Kitchen Timer

Like some of you, we have several kitchen appliances with integrated digital timers.

SparkFun IoT RedBoard ESP32-P4 – Arduino UNO-like ESP32-P4 v3.x development boards with WiFi 6 or PoE options

SparkFun introduced two new development boards called IoT RedBoard, both based on the ESP32-P4 v3.x (ESP32-P4X) and compatible with the Arduino UNO R3

Nibnib: Image compression with extreme decompression speed

Image compression at 4bpp with extreme decompression speed - raphlinus/nibnib

How Noise-Cancelling Headphones Actually Remove Sound in Real Time

Trên các chuyến bay ồn ào, tiếng động cơ liên tục gây khó khăn trong việc nghe nhạc hay podcast. Các tai nghe chống ồn hoạt động bằng cách thu âm thanh môi trường và tạo ra tín hiệu âm ngược pha với tần số 35Hz đến 2000Hz, phù hợp với dải tần tiếng ồn phổ biến. Công nghệ ANC (Active Noise Cancellation) sử dụng microphone exterior để phân tích âm thanh vàDSP (Digital Signal Processor) để tạo ra âm thanh đối nghịch. Kết quả là hệ thống có thể giảm tới 20dB tiếng ồn tại dải tần thấp, giúp người nghe có trải nghiệm tốt hơn mà không cần tăng âm lượng lên mức có hại.

Bài giải thích cách tai nghe chống ồn hoạt động sẽ giúp lập trình viên hiểu được các thuật toán xử lý tín hiệu thời gian thực được áp dụng trong thực tế.

The $8 Linux Computer (2022)

An $8 Ox64 RISC-V single-board computer can run full Linux, not a stripped-down MMU-less kernel. It has three different RISC-V cores, but ethernet, wifi and SD card don't work yet. Flashing it is painful: it must be programmed over UART, not USB, and DevCube crashes on Wayland so you need Xorg. A CH340G USB-UART dongle failed the handshake, so the author used an RP2040 (Adafruit KB2040) running picoprobe as a serial bridge, then had to modify bflb-mcu-tool's uart interface file to strip DTR/RTS handling before it would flash the M0 core.

Flipper's Busy Bar finally runs your own JavaScript apps, and they no longer need a computer to work

The Busy Bar can run JavaScript apps now, and an app catalog is just around the corner.

Bootlin at Capitole du Libre in Toulouse, November 14-15

Bootlin will attend Capitole du Libre in Toulouse on November 14th and 15th as a Platinum sponsor. The company will run a booth in the main hall for discussing activities, career and internships. Thomas Petazzoni presents a sequel talk, 'What's new in the Linux kernel? A year of changes, 2026 edition'. Thomas Bonnefille covers secure over-the-air updates for embedded systems with RAUC. Maxime Chevallier and Alexis Lothoré run a 'Linux Tracing Escape Game' workshop on system diagnostics and tracing.