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Hacker Abroad: Visiting Espressif and Surprising Subway Ads
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...
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Kid Rover Is Six Wheels Of Awesome
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...
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Automated Cat Feeder Handles Wet Food With Aplomb
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...
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Imitating Art in Life with a Reverse-Engineered Tattoo
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...
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Show Your Skills With A Bootable CV
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...
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Game Boy Recreated in Verilog
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...
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Make Your Commodore 16 64k, But Not A Commodore 64
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,...
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Get Moving with New Software from OpenBuilds
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...
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A Ruined Saw Blade Becomes A Bowl
Every workshop generates waste, whether it be wood shavings, scrap metal, or fabric scraps, and sometimes that waste seems too good to throw away. [Igor Nikolic]’s hackerspace had a ruined circular saw...
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Custom LoRa Pager Designed With Care
LoRa is a useful technology if you need to send data a long way at low power levels. Leveraging this, [5Volt-Junkie] decided to build a small pager named the LoRaNicator. Those who love a detailed...
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Here’s The First Person To Put A Pi In The Raspberry Pi Keyboard
Last week, the Raspberry Pi foundation released the first official Raspberry Pi-branded keyboard and mouse. As a keyboard, it’s probably pretty great; it’s clad in a raspberry and white color scheme,...
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Hackaday Links: March 24, 2019
It has come to my attention that a few of you don’t know about Crystalfontz, an online store where you can find displays of all types, from USB LCD displays to I2C OLEDs, to ePaper displays. Thanks to...
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A Z80 Homebrew Console, With A Bit Of Modern Help
We see a lot of retrocomputing projects here at Hackaday that take devices from the 8-bit era and re-create them in the 21st century. Sometimes they remain period-accurate and stick to all...
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Making The World’s Fastest 555 Timer, Or Using A Modern IC Version
If you’re not familiar with the 555 timer, suffice it to say that this versatile integrated circuit is probably the most successful ever designed, and has been used in countless designs, many of which...
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Hacker Abroad: Cellphone Repair in Huaqiangbei and a Huge Meetup at Seeed
Shenzhen, China is the home of the legendary electronics markets of Huaqiangbei. Friday was my first full day in the city, having spent the previous three days in Shanghai. We got a little bit of a...
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This Force Controlled Robot Gripper Is Less Likely To Break Stuff
While robotic arms can handle a wide variety of tasks, the specific job at hand will have a major influence on the type of end effector used. For sorting ferromagnetic parts an electromagnet might be...
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Testing A Battery-Powered Mini Spot Welder
Did you ever see a thin metal tab bonded to a battery terminal with little pock marks? That’s the work of a spot welder. Spot welding is one of those processes that doesn’t offer much in the way of...
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Easy Git Repository Summaries With Web-git-sum
For those hosting their own git repositories there are a number of solutions for creating convenient web-accessible front ends, but [mitxela] wasn’t quite satisfied with any of them. After trying a...
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Can You Live Without the WS2812?
As near as we can tell, the popular WS2812 individually addressable RGB LED was released to the world sometime around the last half of 2013. This wasn’t long ago, or maybe it was an eternity; the...
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Hacker Abroad: Owning a Business in China’s Electonics Markets
I spent a full day on Saturday in the electronics markets of Shenzhen, China. The biggest thing to take away from this is the sheer scale of business that is going on here. It’s a consumer-electronics...
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