Cartography could be changing forever as an advanced tool moves from the lab to the real world. A new quantum gravity sensor helps overcome an issue raised by Einstein.
Coin cells are useful things that allow us to run small electronic devices off a tiny power source. However, they don’t have a lot of capacity, and they can run out pretty quickly if you’re hitting them hard when developing a project. Thankfully, [bobricius] has just the tool to help.
The device is simple – it’s a PCB sized just so to fit into a slot for a CR2016 or CR2032 coin cell. The standard board fits a CR2016 slot thanks to the thickness of the PCB, and a shim PCB can be used to allow the device to be used in a CR2032-sized slot instead.
It’s powered via a Micro USB connector, and has a small regulator on board to step down the 5 V supply to the requisite 3 V expected from a typical coin cell. [bobricius] also gave the device a neat additional feature – a pair of pads for easy attachment of multimeter current probes. Simply open the jumper on the board, hook up a pair of leads, and it’s easy to measure the current being drawn from the ersatz coin cell.
The microphone is a pretty ubiquitous piece of technology that we’re all familiar with, but what if you’re not looking to record audio in the air, and instead want to listen in on what’s happening underwater? That’s a job for a hydrophone! Unfortunately, hydrophones aren’t exactly the kind of thing you’re likely to find at the big-box electronics store. Luckily for us, [Jules Ryckebusch] picked up a few tricks in his 20-year career as a Navy submariner, and has documented his process for building a sensitive hydrophone without needing a military budget.
Continue reading “DIY Hydrophone Listens In On The Deep For Cheap” »
The US National Transportation Safety Board (NTSB) says it is investigating the February 16 crash of a Joby Aviation air taxi prototype in Jolon, California.
The experimental air taxi was being piloted remotely when it went down during a flight at the company’s test base on Wednesday. According to a preliminary report by the FAA, no injuries have been reported.
Equipping ROSALIND, a cell-free biosensing platform, with information processing circuits based on toehold-mediated DNA strand displacement enhances sensor performance and enables logic gate computation.
Glacier Peak in Snohomish County is currently at a “very high” threat for eruption — the top classification of threat levels, according to federal scientists.
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https://youtube.com/watch?v=LcmAlpIp3oM
It’s hard to find a single event with a bigger audience than the Super Bowl, which has made it one of the hottest pieces of advertising real estate anywhere. Meta went big this year with a 60 second ad spot that served to both promote VR to a national audience and solidify its rebranding from Oculus Quest 2 to Meta Quest 2.
If you were watching the Rams and Bengals duke it out during Super Bowl 56 on Sunday, you will also have been introduced to ‘Questy’s’ in an ad during the first quarter. The 60 second spot, which centered around a personified animatronic band that once played at a restaurant called Questy’s, was likely the single most expensive VR-related ad ever shown on TV to date.
ZipCharge announces trial of its portable EV charging solution that can double as energy storage for the grid.
The production issues could impact SSD pricing.
Circa 2016
Digital stickers are on the horizon with a new MIT stamping technique that prints tiny, intricate circuits with electronically conductive ink.
Researchers at Leipzig University have succeeded in moving tiny amounts of liquid at will by remotely heating water over a metal film with a laser. The currents generated in this way can be used to manipulate and even capture tiny objects. This will unlock groundbreaking new solutions for nanotechnology, the manipulation of liquids in systems in tiny spaces, or in the field of diagnostics, by making it possible to detect the smallest concentrations of substances with new types of sensor systems.
The findings are described in an article recently published in Nature Communications (“Hydrodynamic manipulation of nano-objects by optically induced thermo-osmotic flows”).
Illustration of a gold nanoparticle trapped near a locally heated gold surface by hydrodynamic and van der Waals forces. (Image: Martin Fränzl, Universität Leipzig)
