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Test & Tools

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By age 45, many people may suffer from an eyesight condition called presbyopia, which causes the lenses to lose elasticity in our eyes. Our vision requires the elasticity to help keep our eyesight focused on nearby objects. There are also some fixes like reading glasses, surgery or progressive lenses that can help to overcome the defect, and as of recent, there’s autofocals. Developed by electrical engineer, Gordon Wetzstein and his team at Stanford University, the prototype glasses are id ...
Scientists from UCLA have discovered a new way to look at nucleation. By using 4D atomic resolution (which is three dimensions of space and time), the team was able to record how atoms rearrange. Their new discovery, which can be found in the journal Nature, offers a different perspective from predictions made on the original theory of nucleation that can be found in textbooks.   Nanoparticles in an iron-platinum alloy changes state three different times. Observations were recorded usin ...
I'm building a GUI for the electronic load we made here on element14. The development will be in a few incremental steps. This is the second iteration: add error logging make the LCD display emulation work a few dedicated controls to set current and enable / disable input   Retrieve Instrument Status: Multiple SCPI Commands Combined  The screen refreshes the GUI controls based on the instrument status. LCD display displays mode, set current, measured current and voltage, inpu ...
The researchers created a neural network system that can decipher text from lost languages. (Image credit: Sharon Mollerus via Wikipedia)   Researchers from MIT’s CSAIL (Computer Science and Artificial Intelligence Laboratory) and Google Brain have developed a neural network that is capable of deciphering dead languages, including Linear B- a syllabic script that was used for writing Mycenaean Greek, the most ancient form of the Greek language. In a recent paper titled “Neural ...
I'm building a GUI for the electronic load we made here on element14. The development will be in a few incremental steps. communication with the instrument basic GUI with a SCPI command line and results In the next iterations: add error logging make the LCD display emulation work a few dedicated controls to set current and enable / disable input   Functionality in the 1st Iteration  The application has its basic layout and one function implemented. I want to start with a lay ...
My electronic load failed. In this second post, I test the remaining parts of the DAC/ADC board.   Tests Approach  The eload DACs and ADCs are on a separate PCB, together with the voltage reference and the I2C isolator. The voltage reference isn't damaged. I've tested that in the previous post.   All DAC outputs and ADC inputs are broken out to the connector at the low side of the board. The load's firmware has low level SCPI functions that can directly talk to the convert ...
Introduction This blog post discusses a project to build a simple logic analyzer (hobby-grade; it samples at up to 24 Msps, good enough for basic debugging when other tools are not available), but it has a few extra features too. This project could be handy for troubleshooting I2C or SPI when working on projects. It can in theory also be used for generating protocol output too, and for operation as a programmer for microcontrollers and FPGAs.   Nearly all digital electronics nowadays has a ...
My electronic load failed. I was trying new hardware and software options. At a certain moment the power MOSFET died. There was no magic smoke, but the source, drain and gate are all shorted (source, drain and gate all measure a few Ohms in both directions). I am not 100% sure of what has happened, but I think that a bad contact at the gate or current sense resistor, while the FET was supplied with 40 V, did it. No sound, no smell. Just an instantaneous death. In this post, I'm checking what ...
If you run a restaurant, or simply enjoy cooking at home, you are going to want to select the best ingredients available. Salt and other simple commodity ingredients probably don’t require much thought—one brand of table salt is likely as good as any other. But many ingredients, particularly fresh produce and meat, can vary wildly in quality and taste. Those can either end up elevating a meal, or ruining it. That’s why a team of scientists from Japan’s Prefectural Univers ...
The Moverio BT-30C will only cost you $499. These glasses may be smart, but the design isn’t so pretty. (Image credit: Epson)   My dream is to have smart glasses showing me AR info as I work on a project. But first, I suppose we need the basics.   Though smart glasses have been around for a while, they still haven’t caught on with the masses. Google hoped their Google Glass would be a hit, but it quickly fell out of favor. Epson is hoping to break into the consumer market ...
An implanted electrode picks up electrical signals, which are then translated to vocal movements and then speech sounds. Researchers use electrodes similar to this one to decode brain activity. (Photo from UCSF)   There are many diseases that can leas to loss of speaking, such as motor neurone disease, Parkinson’s, and multiple sclerosis. There are methods available that allow people to have some form of communication, but scientists at the University of California have developed a ...
On April 15th, 2019, the Notre Dame Cathedral in Paris, France, was set on fire, causing extensive damage to the historic gothic building. One of the main pieces of the cathedral, the spire, had collapsed during the inferno and the damage to its roof was severe. Most of the objects stored inside the building have been preserved, and the main structure of the building has been kept intact. Now the building can be restored with the help of technology left behind by the late Dr. Andrew Tallon who m ...
A new collaborative effort between Microsoft and the United States Department of Veterans Affairs (VA) was announced on April 30th. The aim of this collaboration is to provide a greater range of opportunities for education, recreation and therapy for veterans who suffer from mobility impairments. They hope to provide those services by adding an Xbox Adaptive Controller ─ which is an Xbox controller designed for people with mobility impairments ─ in certain VA rehabilitation centers in the U.S. & ...
Scientists are on the verge of discovering dark matter by using a very powerful detector filled with liquid xenon located a mile beneath Italy's Gran Sasso mountains. While searching for the dark matter particle, they were able to examine a rare event. The dark matter detector observed the decay of radioactive xenon-124.   Xenon-124 detector located underwater beneath Italy's Gran Sasso mountains. (Image Credit: Nature) Their findings, published in Nature on April 24, is a collaborati ...
This 3D printed heart was made using human fatty tissues (Image credit: Tel Aviv University)   3D printing can be used for various applications, like creating toys, clothing, and even food. But thanks to a new breakthrough it can even be used to create organs. Tel Aviv University researchers have successfully printed the world’s first 3D heart using a patient’s own cells and biological materials. They were able to produce an entire heart, complete with cells, blood vessels, ven ...

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