Author Archives: Fernando Gomes

The ZX Spectrum Next Arrives

Sinclair Research was best known in the United States for the tiny ZX80, and the ZX81, under its Timex branding. However, they also made the ZX Spectrum which had many features that were — at the time — unusual. A few years ago there was a Kickstarter to recreate a …read more

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Posted in retrocomputing, Sinclair Zx Spectrum, ZX Spectrum | Leave a comment

Writing Arduino Libraries, An Expert View

The Arduino IDE has a bit of a split personality. On the one hand, it is a simple environment where you can just pick and choose a few libraries, write a few lines of code, and make lots of interesting things. On the other hand, it is also an ecosystem …read more

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Posted in arduino, Arduino Hacks, Arduino libraries, sparkfun | Leave a comment

MIL-SPEC Keyboard Now Salutes USB

When [easyjo] picked up this late ’80s Marconi mil-spec keyboard for cheap, he knew it wouldn’t be easy to convert it to USB — just that it would be worth it. Spoiler alert: those LEDs aren’t a mod, they’re native. They get their interesting shape from the key traces, which …read more

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Posted in arduino, Arduino Hacks, Arduino Leonardo, HID keyboard, keyboard, Milspec, peripherals hacks | Leave a comment

RC Ground Effect Vehicle Skims Over the Water

In the 1960s the Soviet Union began experimenting with what they called ekranoplans, ground effect vehicles (GEVs) that were something of a hybrid between a ship and a large airplane. Their stubby wings didn’t provide enough lift for the vehicle to fly in the traditional sense, the craft essentially rode …read more

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Posted in ekranoplan, ground effect, remote control, soviet, toy hacks | Leave a comment

Raspberry Pi 4 Offers Up 2 GB for the Price of One

The Raspberry Pi 4 represents a significant performance increase over previous generations, unlocking potential applications that were simply beyond the abilities of these diminutive Single Board Computers (SBCs) in the past. Some would even argue that the Pi 4, with a quad-core Cortex-A72 running at 1.5 GHz, now holds its …read more

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Posted in news, ram, Raspberry Pi, Raspberry Pi 4, SBC, upgrade | Leave a comment

Magnets Make Prototyping E-Textiles a Snap

How do you prototype e-textiles? Any way you can that doesn’t drive you insane or waste precious conductive thread. We can’t imagine an easier way to breadboard wearables than this appropriately-named ThreadBoard.

If you’ve never played around with e-textiles, they can be quite fiddly to prototype. Of course, copper wires …read more

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Posted in conductive thread, f'n magnets, how-to, magnets, prototyping, rapid prototyping, wearable hacks, Wearables | Leave a comment

Be Wary Of Radioactive Bracelets And Similar

Before you start cutting up that ‘negative ion’ health bracelet or personal massager, be aware that these are highly likely to contain thorium oxide or similar radioactive powder, as this research video by [Justin Atkin] (also embedded after the break) over at The Thought Emporium YouTube channel shows. Even ignoring …read more

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Posted in negative ions, news, PSA, science, thorium oxide | Leave a comment

OpenChronograph Lets You Roll Your Own Smart Watch

At first, smartwatches were like little tiny tablets or phones that you wore on your wrist. More recently though we have noticed more “hybrid” smartwatches, that look like a regular watch, but that use their hands to communicate data. For example you might hear a text message come in and …read more

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Posted in Android Hacks, clock hacks, fossil, openchronograph, skagen, smartwatch | Leave a comment

LoRa Mesh Network with Off-the-Shelf Hardware

An ideal application for mesh networking is off-grid communication; when there’s no cellular reception and WiFi won’t reach, wide-area technologies like LoRa can be used to create ad hoc wireless networks. Whether you’re enjoying the outdoors with friends or conducting a rescue operation, a cheap and small gadget that will …read more

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Posted in emergency communications, ESP32, LoRa, mesh network, rescue communications, signal, software hacks, wireless hacks | Leave a comment

Developing Retro Games For Conference Badges With Kate Morris

PCB badges have exploded in popularity in recent years. Starting out as a fun token of entry to a conference, they’re now being developed by all manner of independent groups, with DEFCON serving as the heart of the #badgelife movement. After DEFCON 26, Kate Morris and associates decided to undertake …read more

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Posted in 2019 Hackaday Superconference, badge, badgelife, conference badge, cons, defcon, Hackaday Supercon, lunar lander | Leave a comment