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Author Archives: Aaron Beckendorf

Terminal-Based Web Browsing with Modern Conveniences

Posted on January 2, 2026 by Aaron Beckendorf
A tab-based terminal window is shown, with the label “brow6l – Hackaday.” The Hackaday website is visible in the upper part of the terminal screen, and in the lower part is a text display containing information about the website and interface information.

Programmers hold to a wide spectrum of positions on software complexity, from the rare command-line purists to the much more common web app developers, and the two extremes rarely meet. …read more Continue reading Terminal-Based Web Browsing with Modern Conveniences→

Posted in CLI, linux hacks, sixels, software hacks, terminal, text-based, web browser

Calibrating a Printer with Computer Vision and Precise Timing

Posted on December 22, 2025 by Aaron Beckendorf
A grey and blue coreXY 3D printer is shown, with a small camera in place of its hotend. On the print bed is a ChArUco pattern, a grid of square tiles containing alternating black fill and printed patterns.

[Dennis] of [Made by Dennis] has been building a Voron 0 for fun and education, and since this apparently wasn’t enough of a challenge, decided to add a number of …read more Continue reading Calibrating a Printer with Computer Vision and Precise Timing→

Posted in 3d Printer hacks, ArUco, auto bed leveling, calibration, charuco, computer vision, skew, synchronization, video hacks

A Compact, Browser-Based ESP32 Oscilloscope

Posted on December 21, 2025 by Aaron Beckendorf
A browser window is shown, in which a web page is displaying a green trace of a square wave.

An oscilloscope is usually the most sensitive, and arguably most versatile, tool on a hacker’s workbench, often taking billions of samples per second to produce an accurate and informative representation …read more Continue reading A Compact, Browser-Based ESP32 Oscilloscope→

Posted in diy oscilloscope, ESP32, oscilloscope, seeed xiao, signal generator, tool hacks

Building a Multi-Channel Pipette for Parallel Experimentation

Posted on December 21, 2025 by Aaron Beckendorf
A device within a vertical rectangular frame is shown, with a control box on the front and an LCD display. Within the frame, a grid of syringes is seen held upright beneath two parallel plates.

One major reason for the high cost of developing new drugs and other chemicals is the sheer number of experiments involved; designing a single new drug can require synthesizing and …read more Continue reading Building a Multi-Channel Pipette for Parallel Experimentation→

Posted in 3d Printer hacks, Biology, experiment, microtiter, pipette, Science | Tagged Chemistry

Designing a CPU for Native BASIC

Posted on December 18, 2025 by Aaron Beckendorf
A blue screen is visible, with an ASCII image of the text "Hello World" is displayed.

Over the years there have been a few CPUs designed to directly run a high-level programming language, the most common approach being to build a physical manifestation of a portable …read more Continue reading Designing a CPU for Native BASIC→

Posted in Basic Language, cpu design, FPGA, microcode, retrocomputing, tiny BASIC, virtual machine

Liberating AirPods with Bluetooth Spoofing

Posted on December 13, 2025 by Aaron Beckendorf

Apple’s AirPods can pair with their competitors’ devices and work as basic Bluetooth earbuds, but to no one’s surprise most of their really interesting features are reserved for Apple devices. …read more Continue reading Liberating AirPods with Bluetooth Spoofing→

Posted in airpods, Android Hacks, Reverse-engineering | Tagged Bluetooth, spoofing

Designing a Simpler Cycloidal Drive

Posted on December 12, 2025 by Aaron Beckendorf
A man's hands are holding an assembly of 3D-printed parts. There is a white backplate, with a yellow circular piece running through the middle. The yellow piece is surrounded by metal rods. Another blue shaft runs through the left side of the assembly. A rougly-diamond shaped plate encompasses both of these shafts.

Cycloidal drives have an entrancing motion, as well as a few other advantages – high torque and efficiency, low backlash, and compactness among them. However, much as [Sergei Mishin] likes …read more Continue reading Designing a Simpler Cycloidal Drive→

Posted in cycloidal, cycloidal drive, eccentric, robots hacks | Tagged gearbox

Measuring Earth’s Rotation with Two Gyroscopes

Posted on November 23, 2025 by Aaron Beckendorf
A 3D-printed assembly standing on short legs is visible. A portion extends upward with the word "Nord" sunk into it. Cables extend from one side of the upright portion, and a side view of a circuit board is visible at the front of the assembly.

We’ve probably all had a few conversations with people who hold eccentric scientific ideas, and most of the time they yield nothing more than frustration and perhaps a headache. In …read more Continue reading Measuring Earth’s Rotation with Two Gyroscopes→

Posted in Earth, earth rotation, gyroscope, kalman filter, Raspberry Pi Pico, rotation sensor, Science

Building an Acoustic Radiometer

Posted on November 22, 2025 by Aaron Beckendorf
A circular metal vessel is shown, with a symmetrical rotor of four vanes standing inside. At the bottom of the vessel are four loudspeakers.

A Crookes radiometer, despite what many explanations claim, does not work because of radiation pressure. When light strikes the vanes inside the near-vacuum chamber, it heats the vanes, which then …read more Continue reading Building an Acoustic Radiometer→

Posted in Crookes Radiometer, loudspeaker, radiometer, Science, thermal regulation, white noise

(Neural) Networking with a Business Card

Posted on November 16, 2025 by Aaron Beckendorf
A circuit board in the shape of a business card is shown. The circuitry is confined to the left side of the board, and the rest is used for text.

A PCB business card is a great way for electrical engineers to impress employers with their design skills, but the software they run can be just as impressive as the …read more Continue reading (Neural) Networking with a Business Card→

Posted in Artificial Intelligence, business card, circuit board business card, PCB Hacks, rp2040, Speech recognition | Tagged Voice recognition

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