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Open Hardware/Modding: Arduino, Raspberry Pi, and Lots More
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CNX Software ☛ Avaota F2 – Allwinner V861 RISC-V SBC targets Hey Hi (AI) cameras with PTZ and audio support
Avaota F2 is the first SBC based on an Allwinner V861 dual-core 64-bit RISC-V SoC with 128MB on-chip DDR3 memory, support for 4K cameras, H.265 video codec, and a 1 TOPS Hey Hi (AI) accelerator. It’s an update to the earlier Avaota F1 camera board based on an Allwinner V821 SoC. The new open-source hardware F2 SBC offers several benefits, including support for both Full HD and 4K camera sensors, motor control for the PTZ (Pan-Tilt-Zoom) feature, and improved audio support through speaker (one) and microphone (two) connectors. However, the F1 also included WiFi, which the Avaota F2 lacks.
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It's FOSS ☛ How I Fixed the Biggest Annoyance of My Homelab
Tired of remembering IP addresses and port numbers for your self-hosted services? Here's how I moved my homelab to clean .internal hostnames.
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Linux Gizmos ☛ Four-port IO-Link module for Raspberry Pi and embedded GNU/Linux systems
Pinetek Networks has developed the IOL Core4, a compact IO-Link-compatible master module for embedded systems. It connects up to four industrial sensors or actuators over IEC 61131-9 SDCI and is intended for integration into custom control, monitoring and IIoT hardware. The module uses two Analog Devices MAX14819 dual IO-Link master transceivers.
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Pimoroni ☛ Raspberry Pi Pico 2 Checks Retro RAM Chips in Classic Computers
"Having trouble with your old-school DIP dynamic RAM chips? Here's a simple RAM tester that will give you a definitive pass or fail for a variety of chips."
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Arduino ☛ An Arduino® UNO™ Q lets this vintage terminal answer questions without internet access
We’re living in 2026 and everyone knows that they can ask a large language model (LLM) a question and get an answer. But most people assume that requires an internet connection, because those LLMs live in massive data centers.
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Linux Gizmos ☛ A733 development board with LPDDR5, PCIe storage and RISC-V coprocessor
Shenzhen Graperain Technology has featured an Allwinner A733 development platform with a gold-finger system-on-module and carrier board. It provides an octa-core Arm processor, 3-TOPS NPU, LPDDR5 memory, M.2 storage, GbE and multiple display and camera interfaces.
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Linux Gizmos ☛ ESP32-S3 E Ink board with 800×480 display, mic array and IMU
Makerfabs has added a 7.5-inch model to its MaTouch E Ink family, pairing an 800 × 480 four-color electrophoretic display with an ESP32-S3 controller, four-microphone array, six-axis IMU, microSD storage and optional camera. The board is intended for applications including information displays, voice-controlled interfaces and low-power dashboards.
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CNX Software ☛ LakeShark firmware turns LilyGO T-Display P4 into a handheld ESP32-P4 SDR scanner
LakeShark is open-source firmware by Samuel Reynolds (SAMS0N1TE) that turns the ESP32-P4-based LilyGO T-Display P4 into a handheld SDR scanner. Paired with an RTL-SDR Blog V3 or V4 dongle, it supports P25 Phase I trunking, analog FM/AM, POCSAG pager decoding, and 1090 MHz ADS-B reception directly on the ESP32-P4, without a PC, Raspberry Pi, or smartphone. It also includes an onboard SX1262 that supports LoRa and MeshCore applications.
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Raspberry Pi ☛ Price increases for 2GB Raspberry Pi 4 and Raspberry Pi 5
The current memory supply circumstances are very challenging, but, as we’ve said before, they won’t last forever. The price of memory will eventually subside, and we look forward to reversing our own price increases when it does.
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Hackaday ☛ Archiving The World’s Oldest Webcam Feed
FogCam is the oldest webcam feed that’s still up and running. Installed at San Francisco State University, it’s been slowly uploading a new image to the web every 20 to 60 seconds or so since September 30, 1994. Very few of those images have ever been saved, but [Justin Earl] has come along to fix that with Fog-Bank.
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RTL-SDR ☛ Various Projects Independently Find Hidden SDR Capabilities in ESP32 Microcontrollers
Recently, the ESPARGOS team has made an exciting discovery. They found that several ESP32 chips have an undocumented feature that lets the firmware bypass the fixed WiFi and Bluetooth functionality and instead capture raw IQ baseband samples. As a result, several ESP32 models can now be used as an internal SDR covering 2.2–2.7 GHz, plus 4.8–6.0 GHz on the ESP32-C5, with up to 80 MS/s sample rate and roughly 13–54 MHz of analog bandwidth, depending on the chip.
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Hackaday ☛ The Whole Computer Is Vim
ESP-Vim is, as its name suggests, Vim, for some of the ESP32 series of microcontrollers. It boots straight into the familiar editor on an attached screen, and it has filesystem and git access, along with MicroPython. It’s a small computer for working with text files and some basic scripting, and we like the idea.
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Herman Õunapuu ☛ Don't buy the transparent plastic version of the Makita DCL-180 vacuum cleaner | ./techtipsy
The transparent bit is cool, and you can more easily tell how much dust you’ve sucked up, but as is the case with most transparent plastics, they are more fragile. With this vacuum cleaner model, you’ll be taking off the friction-fit tube a lot to clean up areas like the couch. That kills the plastic.
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Pimoroni ☛ Raspberry Pi Pico 2 Checks Retro RAM Chips in Classic Computers
Albert is using the display on a Pico DRAM Tester board, a board designed by Tube Time to test old-school DIP dynamic RAM chips from vintage computers like the Commodore 64, ZX Spectrum, etc. The tester is powered by an overclocked Raspberry Pi Pico 2 and it can test RAM at full speed, quickly telling you if your RAM is good.
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Arduino ☛ This mouse droid knows how to party
Underneath the 3D-printed shell in that iconic shape, this is an Arduino UNO Rev3-controlled rover robot. It has a pair of motors, which the Arduino controls through an L298N driver. Power comes from a 7.4V lithium battery pack, with a buck converter to reach 5V. An ultrasonic sensor prevents collisions and the sound plays through a DFPlayer Mini MP3 module. Finally, arrays of 5mm red LEDs provide visual flair.