Hack a Day

Get Moving with New Software from OpenBuilds

3 hours 57 minutes ago

If you’re reading Hackaday, you’ve probably heard of OpenBuilds. Even if the name doesn’t sound familiar, you’ve absolutely seen something on these pages that was built with their components. Not only is OpenBuilds a fantastic place to get steppers, linear rails, lead screws, pulleys, wheels, and whatever else you need …read more

Tom Nardi

Make Your Commodore 16 64k, But Not A Commodore 64

6 hours 57 minutes ago

The Commodore 16 was a budget home computer from the mid 1980s, the entry-level model in a wider range of machines. As its name suggests it only has 16k of memory in keeping with its budget status, and while it has the rest of the hardware necessary to run software …read more

Jenny List

Game Boy Recreated in Verilog

9 hours 58 minutes ago

With the wide availability of Raspberry Pi hardware and pre-baked Linux distros with emulators ready to go, making a retro handheld is easier than ever. Emulation isn’t the only way to go about playing old games however. [Wenting Zhang] decided to instead recreate the Nintendo Game Boy in Verilog, and …read more

Lewin Day

Show Your Skills With A Bootable CV

12 hours 58 minutes ago

It’s a thankless task, searching for a job. You send off your CV, or resume, and it joins a thousand other destined for the round file. What on earth can you do to make your career stand out, and catch the eye of the recruiter?

If you are [Pablo Jiménez …read more

Jenny List

Imitating Art in Life with a Reverse-Engineered Tattoo

15 hours 58 minutes ago

In general, tattoo artists are not electrical engineers. That’s fine; the world needs both professions. But when you need a circuit designed, you’re better off turning to an EE rather than a tattoo artist. And you certainly don’t want an EE doing your new ink. Disaster lies that way.

Surprisingly, …read more

Dan Maloney

Tucoplexing: A New Charliplex for Buttons and Switches

18 hours 58 minutes ago

Figuring out the maximum number of peripherals which can be sensed or controlled with a minimum number of IOs is a classic optimization trap with a lot of viable solutions. The easiest might be something like an i2c IO expander, which would give you N outputs for 4 wires (SDA, …read more

Kerry Scharfglass

Maybe You Really Can Sense Magnetic Fields

21 hours 58 minutes ago

We’ve known for years that many animals can somehow sense magnetic fields. Birds apparently use the Earth’s magnetic field to navigate. Dogs can find a box containing a magnet better than they can find a similar box with a food treat in it. But humans, apparently, can’t visualize magnetic fields …read more

Al Williams

Raspberry Pi Tracks Humans, Blasts Them With Heat Rays

1 day ago

Given how long humans have been warming themselves up, you’d think we would have worked out all the kinks by now. But even with central heating, and indeed sometimes because of it, some places we frequent just aren’t that cozy. In such cases, it often pays to heat the person, …read more

Dan Maloney

Create Green, Soldermasked PCBs With Fritzing

1 day 3 hours ago

Even though you can easily order a PCB from any one of a dozen board houses and have it on your desk in a few weeks, there’s still a need for home-made circuit boards. If it’s because you have very special or strange requirements, you want to save money, or …read more

Brian Benchoff

Automated Cat Feeder Handles Wet Food With Aplomb

1 day 6 hours ago

A feline’s appetite is rarely sated, and cat owners around the world are routinely treated to an early morning wake up call to remind them of this fact. To solve this problem, many turn to automated feeders. However, such devices usually handle only dry foods, with a simple hopper system. …read more

Lewin Day

Kid Rover Is Six Wheels Of Awesome

1 day 9 hours ago

There are plenty of ways to go about learning to TIG weld. Most involve a series of practice parts making butt joints and welding together various sections of pipe. [Kris Temmerman] decided to go a little bit farther, however. The result is a kid rover that’s sure to be the …read more

Lewin Day

Hacker Abroad: Visiting Espressif and Surprising Subway Ads

1 day 11 hours ago

Thursday was my final day in Shanghai. After spending all of Wednesday at Electronica Asia, I headed over to the Espressif Headquarters which is just one subway stop away. This is of course the company behind the well-known ESP8266 and its younger sibling, the ESP32. My host was Ivan Grotkothov, …read more

Mike Szczys

Retrotechtacular: Nellie The School Computer

1 day 12 hours ago

When did computers arrive in schools? That should be an easy question to answer, probably in the years around 1980. Maybe your school had the Commodore Pet, the Apple II, or if you are British, the Acorn BBC Micro in that period, all 8-bit microcomputers running a BASIC interpreter. That’s …read more

Jenny List

Robot Telephone Operator Handles Social Media For You

1 day 14 hours ago

Social media has become pervasive in modern life. It can be impossible to get so much as an invite to a party without offering up your personal data at the altar of the various tech companies. [David] wanted to avoid the pressures of seeing countless photos of people climbing mountains …read more

Lewin Day

Faster Computers Lead to Slower Experiences?

1 day 18 hours ago

Ever get that funny feeling that things aren’t quite what they used to be? Not in the way that a new washing machine has more plastic parts than one 40 years its senior. More like “my laptop can churn through hundreds of gigaflops, but when I scroll it doesn’t feel …read more

Kerry Scharfglass

The Multichannel Field Recorder You Can Build Right Now

1 day 21 hours ago

Field recorders, or backpackable audio recorders with a few XLR jacks and an SD card slot, are a niche device, and no matter what commercial field recorder you choose you’ll always compromise on what features you want versus what features you’ll get. [Ben Biles] didn’t feel like compromising so he …read more

Brian Benchoff

A Steady Hand Makes This Chip Work Again

2 days ago

What do you do when you’re working with some vintage ICs and one of the tiny legs pops off? That’s what happened to [Kotomi] when working with an old Super Nintendo. A single lead for the sound chip just snapped off, leaving [Kotomi] one pin short of a working system …read more

Brian Benchoff

Make Your Own Quantum Dots

2 days 3 hours ago

Quantum dots certainly sound as if they should be something cool, but carry the hazardous baggage of being sometimes made from cadmium which can be dangerous. What are they? In essence, they are nanometer-scale particles, so small that when high energy light hits them, the photons will be absorbed and …read more

Al Williams

Volkswagen Tools Turned To The Space Age

2 days 6 hours ago

The Volkswagen Beetle, and yes the bus and the sexiest car ever made, are cars meant for the people. You can pull the engine out with a strong friend, and you can fix anything in an old Volkswagen. VW realized this, because in the 1950s and ’60s, they came up …read more

Brian Benchoff