Flipper Devices Unveils the Flipper One, an Open ARM Linux Computer for Network Hacking

Flipper Devices has unveiled the Flipper One, a next-generation open ARM Linux computer aimed at network-layer security research rather than the low-level radio hacking of its predecessor, the Flipper Zero. The prototype is powered by a Rockchip RK3576 octa-core processor paired with a Raspberry Pi RP2350 co-processor, with optional 5G or 4G LTE modem, Wi-Fi 6E, dual Gigabit Ethernet, two M.2 slots, PCI Express, USB 3.0, and SATA connectivity. The company is publicly soliciting community contributors to help develop firmware and documentation, with the stated goal of building the most open and best-documented ARM computer in the world. Pricing and availability are not yet announced.

Sources: Hackaday

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Unitree GO-M8018-6 Robot Motor Gets Open-Source Firmware via Community Reverse Engineering

Researcher Thomas Flayols has published a detailed reverse engineering of the Unitree GO-M8018-6 motor, a compact actuator used in the Go2 quadruped robot, with the goal of producing fully open-source replacement firmware. The motor integrates a reducer, magnetic encoder, 3-phase inverter, current sensing, RS-485 bus, and a CMS32M57xx Cortex-M0 MCU. Physical identification required X-ray imaging after Unitree removed all IC markings from the PCB. SWD and OpenOCD access were established to extract the encryption key from bootloader SRAM, revealing the firmware. An initial custom firmware is already on GitHub, opening these capable motors to use outside of Unitree’s closed ecosystem.

Sources: Hackaday

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DIY Hydroelectric Turbine Generates 200W from 3m Head Using PVC Pipe and Hoverboard Motor

An open-source collective called OpenSourceLowTech has shared a hydroelectric turbine design that generates around 200 watts from just three meters of head, comparable to a 150W solar panel but with the potential for continuous generation when water is available. The turbine is assembled from 110mm and 160mm PVC pipe housing a repurposed computer fan as the rotor, with its shaft fed through a Y-fitting to a generator built from a scavenged hoverboard wheel motor. The system outputs approximately 3.3A DC at 60V. Animated build documentation is freely available, and all components can be sourced locally for a cost below that of equivalent commercial solar hardware.

Sources: Hackaday

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M5Stack StopWatch Brings a 1.75-Inch Round AMOLED Display to ESP32-S3 Development

M5Stack has launched the StopWatch, a compact ESP32-S3 development board built around a distinctive 1.75-inch round AMOLED touchscreen with 466×466 resolution. The devkit runs an Espressif ESP32-S3R8 dual-core Tensilica LX7 processor at up to 240 MHz with vector instructions for AI acceleration, 8MB of PSRAM, and 16MB of flash. Connectivity includes Wi-Fi 4 and Bluetooth 5.0 LE with Mesh support. Audio features include a 1W speaker and MEMS microphone with an ES8311 audio codec. The StopWatch targets wearables, IoT badges, and portable devices requiring compact round displays. It is available now for $45 from the M5Stack store and AliExpress.

Sources: CNX Software

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Banana Pi BPI-R4 Pro’s 10GbE Router Board Struggles Toward Official OpenWRT Support

The Banana Pi BPI-R4 Pro, a high-performance router board based on the MediaTek Filogic 880 MT7988A Cortex-A73 SoC, is navigating an uphill battle for official OpenWRT support. The board features two 10GbE SFP+ cages, four 2.5GbE RJ45 ports, two Gigabit Ethernet ports, optional Wi-Fi 7 via Mini PCIe, 8GB of DDR4 RAM, and 256MB of SPI flash. Despite strong community interest, the OpenWRT pull request thread shows progress remains painfully slow, with support currently available only through unofficial builds. The BPI-R4 Pro sells for $165 on the Banana Pi store, making it a capable but firmware-constrained networking platform for advanced makers seeking full open-source router control.

Sources: Hackaday

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Autonomous DIY Submarine Navigates Underwater Using Raspberry Pi 4 and HSV Color Detection

Builder Ayman has documented a DIY autonomous submarine capable of navigating underwater using only a camera and color-based object detection, a technique more reliable than RGB tracking due to its relative brightness independence. The hull is a sealed acrylic tube with a magnetic coupling for the propeller shaft, avoiding water-ingress risks from conventional shaft seals. Inside, a Raspberry Pi 4 runs the navigation stack alongside an Arducam IMX708 wide-angle camera, a BNO085 inertial measurement unit, two BMP280 pressure sensors, and a DRV8833 motor controller. HSV color thresholds drive the avoidance routines. The build addresses a notable gap in the DIY AUV space, where fully autonomous designs remain comparatively rare.

Sources: Hackaday

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Espressif Reveals Two ESP32-S31 Reference Boards with Gigabit Ethernet, Wi-Fi 6, and Audio

Espressif has released two reference development boards for its new ESP32-S31 wireless microcontroller, previewing how the chip’s expanded capabilities translate into real hardware designs. The ESP32-S31 features dual RISC-V cores, Gigabit Ethernet MAC, Wi-Fi 6, Bluetooth 5.4 LE including LE Audio, and 802.15.4 connectivity. The ESP32-S31-Function-CoreBoard-1 targets connected IoT applications with Gigabit Ethernet, USB 2.0 OTG, and onboard audio peripherals. The companion ESP32-S31-Korvo-1 is a multimedia board featuring a dual-microphone array, two speaker connectors, a 4.3-inch LCD, a 3MP camera, and a microSD slot. Documentation is already publicly available ahead of wider distribution.

Sources: CNX Software

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