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Microbatteries On The Grid
Not everybody has $6500 to toss into a Tesla Powerwall (and that’s a low estimate), but if you want the benefits of battery storage for your house, [Matt]’s modular “microbattery” storage system might...
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NASA Spinoff Prints Electronics
NASA says that Electronic Alchemy’s eForge 3D printer is another space program spinoff. The printer looks a lot like a conventional 3D printer but unlike its mundane cousin it can print sensors,...
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Trimmed PCB Makes The Ultimate Portable N64
One of the most impressive innovations we’ve seen in the world of custom handhelds is the use of “trimmed” PCBs. These are motherboards of popular video game consoles such as the Nintendo Wii and Sega...
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A Soldering LightSaber For The Speedy Worker
We all have our preferences when it comes to soldering irons, and for [Marius Taciuc] the strongest of them all is for a quick heat-up. It has to be at full temperature in the time it takes him to get...
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Poor Maintenance Could have Led to Fatal B-17 Crash
In October the Nine-O-Nine, a fully restored Boeing B-17G bomber owned and operated by the Collings Foundation, crashed with thirteen people on board. After landing hard and skidding into the de-icing...
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An Open Source Shipboard Computer System
We’re not sure how many of you out there own a boat large enough to get its own integrated computer network, but it doesn’t really matter. Even if you can’t use this project personally, it’s impossible...
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A Really Garbage Project
No matter who you are, you produce garbage of some kind or another. Two students decided they wanted to create a smart garbage can that could alert them when the can is full or even when it is...
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Ondophone On Point
The name Ondophone is a mash-up of two instruments, the Marxophone, and the ondes martenot. From the Marxophone, [Wintergatan] borrows the spring-loaded hammers, which repeatedly strike a string once...
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Got Me Feeling Blue
Sleep schedules are an early casualty in the fight to be productive. Getting good sleep is an uphill battle, so anything that can help us is a welcome ally. We all know about the phone and computer...
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Custom Drill Press Table Eliminates Hassles
Getting a perfect workshop together, with all the right tools, is a dream for many. A lot of us cobble together what we can with a dremel tool, a soldering iron, and whatever work surface happens to...
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Hackaday Links: March 29, 2020
It turns out that whacking busted things to fix them works as well on Mars as it does on Earth, as NASA managed to fix its wonky “mole” with a little help from the InSight lander’s robotic arm....
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Can You Print With Highlighter Ink?
With huge swathes of people either out of work or working from home, many are now attempting all manner of exciting or silly projects in their downtime. [Emily Velasco] is no exception. She decided to...
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Rock Out While You Knock Out Germs
We don’t know about you, but we’re pretty tired of singing two rounds of “Happy Birthday” or counting Mississippi to 20 each time we wash our hands. It’s difficult to do it without thinking about the...
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Ammo Can Battery; 50 Ah LiFePO4 Clad in Army Green
For the price of a mid-range Android phone, [Kenneth Finnegan] turned a 50 caliber ammo can into a 50 amp-hour portable power supply. The battery pack uses four 3.5 V LiFePO4 cells wired in series to...
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Printed Door Handle Turns Key With a Servo
[Madalin Valceleanu] had a somewhat unique problem. He wanted to make his front door a bit “smarter”, but none of the IoT door locks he found were compatible with the style of reinforced door he had....
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Professional Ventilator Design Open Sourced Today by Medtronic
Medical device company Medtronic released designs for one of their ventilators to open source for use in the COVID-19 pandemic. This is a laudable action, and there is plenty to glean from the specs...
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Maxing Out Browser Tabs With 2TB Of Memory
Tabbed browsing was a gamechanger, allowing users to effectively browse multiple websites at once without losing context. It proved a better solution than using multiple windows, and was an efficiency...
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DIY Bagpipes Made From Common Household Items
The bagpipes, most commonly seen in their Great Highland form from Scotland, are a loud and imposing musical instrument. Known for being difficult to practice quietly, they’re not the ideal thing to...
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Fail of the Week: In CAD, Remember to Model the Environment
What’s wrong with the above picture? Failure can be an excellent teacher, and [J. Peterson] reminds us all of this when he says to remember to model the environment when designing things in CAD. He...
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Using A Vending Machine Bill Acceptor With Arduino
We’ve all seen, and occasionally wrestled with, bill acceptors like the one [Another Maker] recently liberated from an arcade machine. But have you ever had one apart to see how it works? If not, the...
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