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Electronics Technology
Front row L to R: High School medalists—Silver-Zachary Luick, Orleans Career & Technical Education Center (N.Y.); Gold-Nathaniel Shramko, Whittier Regional Vo Tech High School (Mass.); Bronze-Garrick Jordan, Crawford County Career and Tech Center (Pa.). Back row L to R: College/Postsecondary medalists—Silver-Josiah Carpenter, Nash Community College (NC); Gold-Dan Gustafson, Kirkwood Community College (Iowa); and Bronze-Martin Kay, College of Western Idaho (Idaho).
N8VEM ribbon cable. From left to right, the ribbon cable lines are connected to pins 1 (black), 2 (white), 3 (gray), 4 (purple), 5 (blue), 6 (green), 7 (yellow), 8 (orange), 9 (red), 10 (brown).
Pin 1 on the header is marked by a triangle on the solder mask silk screen, and the pins are numbered 1, 3, 5, 7, 9 on the bottom row (toward the components), and 2, 4, 6, 8, 10 on the top row (away from the components)
Also in production is the inflatable balloon catheter, which is inserted in a vein in the leg and travels to the interior of the heart, so to avoid open heart surgery.
It's a "Larson Scanner" based on the Evil Mad Scientist kit of the same name. Details at my blog:
baldwisdom.com/desperate-halloween-project-the-cylon-pump...
Made possible by a pretty good selection of parts now on hand (I had to buy the big LED's) and my Adafruit USBTiny ISP
One word of advice: Buy the kit. I thought of doing this too late, but wish I had. The kit would have taken me 15 minutes, this ended up taking hours.)
Hi-Tech Electronics. New York City. July 6, 2017. © Copyright 2017 G Dan Mitchell - all rights reserved.
Man crosses street in front of Hi-Tech Electronics store, Manhattan
I made this photograph on a quick walk through a slightly seedy area of Manhattan, passing through on a hot afternoon as many people filled the streets. (It actually was crowded, despite the appearance in this photograph.) The area is one of somewhat run-down businesses in one of those pockets where there are not so many tall buildings.
I see many things when doing street photography. Some of them are static enough that I can take some time to make the photograph, but others happen instantaneously and are gone in an instant — they require a "shoot without thinking" kind of response — and that was the case with this one. Obviously, the man walking toward me was only there for a moment, but even better was the brief conjunction of red things in the frame. A close look may reveal even more of them that you notice at first.
G Dan Mitchell is a California photographer and visual opportunist. His book, "California's Fall Color: A Photographer's Guide to Autumn in the Sierra" is available from Heyday Books and Amazon.
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All media © Copyright G Dan Mitchell and others as indicated. Any use requires advance permission from G Dan Mitchell.
Unkown PCB found in a box of electronic junk, call it surplus, that I found in my basement.
You can clearly see the LM813N Op Amp. The Diode looking thing is lable DI01, so it probably is one. You can see many caps of 3 different shape and color, and two weird prongs with hallow centers coming out of the top of the PCB (labeled TPI01 TPI02).
I have no idea where it comes from and I'm seriously wondering if it's a sensor or a LED. What kind? It looks a lot like a bigger version of laser leds from cd/dvd-rw.
Any idea what it is?
www.recyclart.org/2013/08/joyas-y-accesorios-de-residuos-...
Electron Memories is an idea that represents my Jewelry and accessories made ​​from recycled electronic components. Memories Electron was born by combining my passion for technology, art and the need to live in a less polluted world. I started taking apart old electronics components that are no longer used or thrown in the street that pollute the soil and underground water.
Researched and dabbled on current trends in jewelry and accessories, it began to emerge creatures and objects of art. So, recycling and combining these old electronics devices where electrons circulates before are now only memories of his travels at the speed of light, these gems were born.
Electron Memories es la idea que representa a mis Joyas y accesorios hechos con componentes electrónicos reciclados. Electron Memories nació combinando la pasión por la tecnologÃa, el arte y la necesidad de vivir en un mundo menos contaminado. Comencé desarmando viejos aparatos electrónicos que ya no usaba o que encontraba en la calle e iban a contaminar la tierra y el agua enterrados como relleno. Reconecté mi pasado artÃstico de maquetista y se despertó nuevamente el artista que estaba hibernando hasta esta primavera de colores y formas caracterÃsticos de los variopintos componentes electrónicos.
Investigué e incursioné sobre las tendencias actuales en joyas y accesorios y empezaron a surgir criaturas y objetos de arte.
Asà reciclando, combinando y resignificando estos antiguos artilugios de la electrónica por donde antes circulaban electrones y hoy sólo quedan los recuerdos de sus viajes a la velocidad de la luz, nacieron estas joyas. Hernan Bressan.​
More information: Electron Memories website !
Submitted by: Hernan Bressan !
Freedom Furniture & Electronics (17,615 square feet)
12723 Jefferson Avenue, Denbigh Crossing, Newport News, VA
This location opened in the mid 2000s and closed in 2014; it was originally Heidy's Hobbies and Crafts, which opened in November 1986. It became a Paul's Arts & Crafts in summer 1989 (originally located here), which closed in February 2001 after merging with this store, and became a Wayne's Home in July 2023.
Frickelfest (I love it)
sound.westhost.com/why-diy.htm
Why DIY?
Contrary to popular belief, the main reason for DIY is not (or should not be) about saving money. While this is possible in many cases (and especially against 'top of the line' commercial products), there are other, far better reasons to do it yourself.
The main one is knowledge, new skills, and the enormous feeling of satisfaction that comes from building your own equipment. This is worth far more than money. For younger people, the skills learned will be invaluable as you progress through life, and once started, you should continue to strive for making it yourself wherever possible.
Each and every new skill you learn enables the learning processes to be 'exercised', making it easier to learn other new things that come your way.
Alvin Toffler (the author of Future Shock) wrote:- "The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn."
This is pretty much an absolute these days, and we hear stories every day about perfectly good people who simply cannot get a new job after having been 'retrenched' (or whatever stupid term the 'human resources' people come up with next). As an aside, I object to being considered a 'resource' for the corporate cretins to use, abuse and dispose of as they see fit.
The skills you learn building an electronics project (especially audio) extend far beyond soldering a few components into a printed circuit board. You must source the components, working your way through a minefield of technical data to figure out if the part you think is right is actually right. Understanding the components is a key requirement for understanding electronics.
You will probably need to brush up on your maths - all analogue electronics requires mathematics if you want to understand what is going on. The greater your understanding, the more you have learned in the process. These are not trivial skills, but thankfully, they usually sneak up on you. Before you realise it, you have been working with formulae that a few years ago you would have sneered at, thinking that such things are only for boffins or those really weird guys you recall from school.
Then there is the case to house everything. You will need to learn how to perform basic metalworking skills. Drilling, tapping threads, filing and finishing a case are all tasks that need to be done to complete your masterpiece. These are all skills that may just come in very handy later on.
Should you be making loudspeakers, then you will learn about acoustics. You will also learn woodworking skills, veneering, and using tools that you may never have even known existed had you not ventured into one of the most absorbing and satisfying hobbies around.
Ok, that's fine for the younger generation(s), but what about us 'oldies'? We get all the same benefits, but in some cases, it is even possible to (almost) make up for a lifetime spent in an unrewarding job. As we get older, the new skills are less likely to be used for anything but the hobby, but that does not diminish the value of those skills one iota.
However, it's not all about learning, it's also about doing. Few people these days have a job where at the end of the day they can look at something they built. Indeed, in a great many cases, one comes home at the end of the day, knowing that one was busy all day with barely time for lunch, yet would be hard pressed to be able to say exactly what was achieved. What would have happened if what you did today wasn't done? Chances are, nothing would have happened at all - whatever it was you did simply wasn't done (if you follow the rather perverse logic in that last statement ).
Where is the satisfaction in that? There isn't any - it's a job, you get paid, so are able to pay your bills, buy food and live to do the same thing tomorrow.
When you build something, there is a sense of pride, of achievement - there is something to show for it, something tangible. No, it won't make up for a job you hate (or merely dislike), but at least you have created something. Having done it once, it becomes important to do it again, to be more ambitious, to push your boundaries.
Today, a small preamp. Tomorrow, a complete state of the art 5.1 sound system that you made from raw materials, lovingly finished, and now provides enjoyment that no store-bought system ever will.
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
Shop online for electronics, photos, electronic accessories and more at low prices in India on ShoppingMantraz.com
So there's burnt chip on the motherboard near the battery connector, could this be the cause? Also, anybody selling cheap FSC Amilo SI1848+u motherboard? :)
After putting this thing back together I now have three spare screws!
The display on my 1960s-vintage Hewlett Packard 132A dual-beam oscilloscope is dead, and I suspect the problem is the CRT tube. But before I can search for a replacement, I had to get the part number. And to get the part number, I had to poke around inside.
Now I know, so If you happen to have a spare HP 5083-0722 CRT tube on hand, or if you have any idea how to fix this, please give me a shout.
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
A servo moves the indicator arm as the ultrasonic rangefinder detects things. It's accurate to within a centimeter at close range, and within 5cm at longer ranges.
It works up to 3m, but my wall is 2.73m away. In this shot, my hand is being found a few centimeters away.
I also have an IR rangefinder which is a bit more complicated to use because of the non-linear response, but I'm working on it!
The PCBs for my nixie tube clock arrived, and I even got twice as many as I ordered! Hurrah for Gold Phoenix.
At any rate after a marathon soldering session they are finally assembled and awaiting testing and programming and all that. The power supply works, and the AVR was programmable, so that's a good sign!