Open Graphics Card Powers Cyberpunk “Laptop”

https://invidious.privacyredirect.com/watch?v=voAOBRb6cbw

For once, we can avoid debating in the comments what constitutes a “cyberdeck”, because [LCLDIY] does not refer to his cyberpunk masterpiece as such — he calls it a laptop. Considering the form factor is more like an all-in-one with a built-in laser projection keyboard, that’s arguably an even more controversial label to use, but as stylish this build is, it’s what’s inside it that interests us most.

No, not the cash-register motherboard that serves as the brain, though that has got to be worth some...

The Rapper, The Canadian Academics, And The Secret Behind The Earworm

There are many events so far in 2026 that could reasonably have been predicted, but perhaps one which couldn’t is a Hackaday scribe in Europe unexpectedly finding herself with a constant earworm from Afroman. The rapper, who most of us know only from his year 2000 hit single about getting high, made the news after an inept police raid on his house, and in turn a court case over his musical denunciations of the authorities.

It’s fair to say they picked on the wrong guy, but in thinking about why, the answer is in the earworm. He has the unique skill...

Heathkit Tuner Saved from Junk Pile

https://invidious.privacyredirect.com/watch?v=wgcfMzk1ZDI

We miss the old Heathkit. You could build equipment that rivaled or even surpassed commercial devices. The cost was usually reasonable and, even if you could get by with less, the satisfaction of using gear you built yourself was worth a lot. Not to mention the knowledge you’d gain and your confidence in troubleshooting should the need arise. So we were jealous of [RCD66] when he found a Heathkit AJ-43C stereo tuner in the recycle bin.

As you can see in the video below, it needed a lot of love to get back to its former self. The device dates from...

Making a Vintage Allen Scythe Electric

https://invidious.privacyredirect.com/watch?v=7ppskYwYB5o

The Allen Scythe is one of those fantastic pieces of vintage agricultural machinery which would never be allowed to be manufactured today for health and safety reasons. It’s a two-wheel walk-behind device with a frightening reciprocating cutter bar which makes short work of almost anything. It’s the perfect tool for the roughest of brush clearance, but it demands respect. [Way Out West Workshop Stuff] has one, and is replacing the vintage Villiers two-stroke engine with an electric motor.

The conversion is straightforward enough, the Villiers crankshaft being replaced with a straight-through axle that can be driven by the motor. We particularly...

Velxio is an open-source, self-hosted Arduino, Raspberry Pi, and ESP32 simulator

Velxio is an open-source, self-hosted simulator for Arduino, ESP32, and Raspberry Pi boards that works directly in your web browser. You can drag-and-drop boards, connect components and modules, write and run code in Arduino or Python, and access the serial console, all without hardware. If it looks similar to what the Wokwi simulator has to offer, it’s because Velxio was inspired by it and even integrates the AVR8 CPU emulator, RP2040 emulator, and QEMU fork for ESP32 Xtensa emulation from the Wokwi project. But the key difference is that Velxio can be self-hosted, although there’s also an online demo. Velxio...

M5Stack Refreshes Lineup with CardKB2 Keyboard, ESP32-P4 Modules, and Core2 for AWS

M5Stack has introduced several new and updated products, including the CardKB2 keyboard unit, the Stamp-P4 module based on the ESP32-P4, a matching Wi-Fi expansion module, and an updated Core2 for AWS development kit. The lineup spans input devices, embedded modules, and IoT-focused development platforms. The CardKB2 is a compact 42-key keyboard built around the ESP32-C61HF4, […]

Reverse-Engineering a Handheld Car Tire Pressure Gauge

https://invidious.privacyredirect.com/watch?v=X_eoe5FUbUU

The SDIC 8-bit MCU. (Credit: electronupdate, YouTube)

In this wonderful world of MEMS technology, sensor technology has been downsized and reduced in cost to the point where you can buy a car tire pressure sensor for less than $3 USD on a site like AliExpress. Recently [electronupdate] got his mittens on one of these items to take a look inside, and compare it against his trusty old mechanical tire pressure gauge.

Perhaps unsurprisingly, there isn’t a whole lot inside these devices once you pop them open to reveal the PCB. The MEMS device is a tiny device at the top, which has...

Simulating a glowing fireplace with an RP2040

Today, fireplaces, their cozy glow once a household staple, are mostly a thing of the past. In fact, a decent amount of old fireplaces are completely blocked up! [David Capper] brings back the atmosphere without the actual flames, with his RP2040-based fireplace glow simulator.

It’s not just a string of LEDs with some PWM brightness control, either. No, [David] goes into detail about the black body radiation that gives these fires their colors. He then uses the theory of black-body radiation to determine the colors that the LEDs glow to simulate the colors of a real fire.

But the colors alone don’t...

Burning Wood to Brew Wood to Preserve Wood : Pine Tar

https://invidious.privacyredirect.com/watch?v=smk2Mf_80zM

Before there was pressure-treated wood, before modern paints, there was pine tar. Everything from tool handles to wagons to ships were made of wood preserved with pine tar, once upon a time, and [woodbrew] wants to show you how to make it, how to use it, and why you might put it on your skin.

It starts with, you guessed it, pine! In the first part of the video, [woodbrew] creates a skin salve with pine resin and food-safe oil. The pine resin–which is the sticky goop that dries around wounds on evergreen trees–is highly antiseptic and has been used in...

Build your own Dial-up ISP with a Raspberry Pi

Last year my aunt let me add her original Tangerine iBook G3 clamshell to my collection of old Macs1.

It came with an AirPort card—a $99 add-on Apple made that ushered in the Wi-Fi era. The iBook G3 was the first consumer laptop with built-in Wi-Fi antennas, and by far the cheapest way to get a computer onto an 802.11 wireless network.