Adafruit

Researchers have developed a wearable patch to monitor high-risk pregnancies. It connects to a computer that interprets ultrasound data. Sheng Xu via Stanford University Researchers at Stanford Medicine, the University of California San Diego and Oxford University developed a wearable ultrasound patch to monitor high-risk pregnancies. Stanford University shares the details of their research and […]

PCMFlow is a lightweight audio decode and PCM flow library for Arduino. As is, voice audio had too high a bitrate for use in applications like ESP-NOW mesh networking. The G.722 wideband (HD voice) codec add-on for PCMFlow is aimed at real-time two-way voice over packet radio / network — VoIP, ESP-NOW transceivers, WebSocket / UDP voice links. […]

Severin Schols of MakerVan Labs has created the open-source hardware OSHW Coloring Zine, a booklet with pictures and descriptions of various open source hardware projects. It’s perfect to colored in. The projects are: Arduino Uno (Rev3) Novena OpenROV EggBot Makerbot Cupcake Safecast bGeigie Nano Precious Plastic Injection Machine TV-B-Gone You can view the book as […]

LUNA is a toolkit by Great Scott Gadgets for working with USB using FPGA technology, providing gateware and software to enable USB applications. Some things you can use LUNA for, currently: Protocol analysis for Low-, Full-, or High- speed USB. LUNA provides gateware that allow passive USB monitoring when combined with Cynthion and Packetry. Creating your own Low-, Full-, […]

ShadowCat is a fully offline, single-file HTML page for moving data between two devices via QR codes — intended for old phones whose radios (BLE, NFC, etc.) are dead but whose cameras and browsers still work. Generate — encode text into a single QR code. Scan — decode a single QR via the camera. Send file — pick […]

White Rabbit provides sub-nanosecond accuracy and picoseconds precision of synchronization for large distributed systems. It also allows for deterministic and reliable data delivery. White Rabbit allows you to precision time-tag measured data and lets you trigger data taking in large installations while at the same time using the same network to transmit data. sub-nanosecond synchronization […]

Join the NYPL this summer with reading challenges and their first ever Big Summer Book Club. Anyone with a NYPL card can checkout the e-book version of N.K. Jemisin’s The City We Became, no wait times. See more and participate here! The culmination of the reading club is a celebration on August 17. Calling all […]

SHOW and TELL 5/27/2026 with @johnedgarpark #ShowandTell @adafruit The biggest and longest running worldwide online Show and Tell LIVE! 5/27/2026 at 7:30pm Eastern.  Video. Hosted this week by John Park

The WCH BLE Analyzer Pro is an inexpensive (~$20) USB Bluetooth LE sniffer and analyzer, useful and a good value for reverse engineering and debugging. The BLE Analyzer Pro features three CH582F Bluetooth LE RISC-V microcontrollers and a CH334 USB hub, supports Bluetooth Low Energy (BLE) 4.0/4.2/5.0, and connects to the host through its USB-C […]

So called “leverless” controllers are popular among fighting game enthusiasts for their speed and accuracy compared to traditional lever-style joysticks. Build your own with the QT Py RP2040 and GP2040-CE firmware. Mini arcade buttons mounted to a 3D printed case (or BYOB(ox)) make for a playable, ergonomic design. And by wiring the buttons to the […]

A couple of weeks ago, Veronica decided to convert an old laptop into a writerdeck, a dedicated writing device free from the distractions of the modern internet. Lots of folks build really elaborate offline devices for this, and I’d love to do that… someday. Right now I have no shortage of projects and the point […]

With Sales & Dungeons, you can create highly customizable handouts, quick reference and much more for your Dungeons and Dragons (or other PnP) sessions. Most thermal printers are small in size and can be taken with you and kept right at the gaming table. Use-cases range from printing out magic items, spells, a letter that […]

Sylwester (DatanoiseTV on GitHub) is pulling forgotten hardware out of the parts bin and getting it running on current software. He is bringing the Next Thing Co. PocketCHIP back from the drawer of dead electronics with a current mainline Linux kernel, current U-Boot, and a properly small OpenWrt userspace you can actually ssh into. A […]

Norbert Landsteiner does a deep dive into the font of the “Dead Test” diagnostic cartridge of the C64, including an Easter egg, a look into the implementation, and, finally, some Commodore 8-bit character ROMs for download. The C64 “Dead Test” diagnostic cartridge Rev. 718220 (Commodore part № 314139-03) famously comes with a special font, embedded […]

We’re taking a look at an oldie but goodie, our GEMMA hoop earrings. GEMMA jewelry! The bitty board fits perfectly in the center of a NeoPixel ring for flashy hoop earrings or a charming pendant. This guide was written for the ‘original’ Gemma board, but can be done with either the original or M0 Gemma. […]

Ken Shirriff provides another excellent post, this time on the computer used on Spacelab back from 1980. Spacelab was a reusable laboratory that could be carried in the cargo bay of the Space Shuttle, providing lab space for astronauts and experiments. Spacelab was controlled by a French-built minicomputer, called the Mitra 125 MS. Unlike modern […]

Olimex posts about TuxCon 2026 being a great experience filled with good conversations, interesting sessions, and plenty of fun. Saturday was packed with meetings and conversations with colleagues and friends throughout the conference. The lecture sessions sparked many discussions. On Sunday, the traditional soldering workshop took place in the training building of Olimex. Participants ranging […]

This new learn guide is inspired by Olivia Zhu’s A Minimal Self-Perceiving Embodiment for Large Language Models (2026, zenodo, GitHub). The core idea of the project is to give an LLM agent access to a device that can be used to sense the environment that its human user is in, and to express itself in […]

The AAPI History Hub provides K–12 educators with Lesson Plans, Books, Films, and more ready to integrate into teaching and classrooms, via AAPIhistoryhub The AAPI History Hub provides K–12 educators with a vetted collection of resources, including Lesson Plans, Books, Films, and more, that are ready to integrate into your teaching and classrooms. … We […]

Maker Luke Ditria has once again revisited his Python and Raspberry Pi Zero 2 W-powered bird-spotting wildlife camera project. This time, he upgrading it with a 3D-printed enclosure and a solar panel with custom-designed photovoltaic HAT add-on for full off-grid operation. Check out the video below and more on GitHub and hackster.io.