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I am a sucker for old engineering booklets even though I can barely change batteries in a flashlight. I found this booklet among some offerings that once belonged to a Ham Radio operator last year in a Conroe, Texas thrift store.
Good information like this never goes out of style!
Allied's Electronics Data Handbook: A Compilation of Formulas and Date Most commonly Used in the Field of Radio and Electronics.
The Allied Radio Corporation of Chicago. Eugene Carrington and Nelson M. Cooke, editors. 1956.Second edition, 1957.
Consumer Electronics Show 2014 in Las Vegas, NV - CES2014
(cc) David Berkowitz - www.marketersstudio.com / www.about.me/dberkowitz
Front row L to R: High School medalists—Silver-Joseph Ferguson, Red River Technology Center (Okla.); Gold-Joshua McKelvey, Parkside High School (Md.); and Bronze-Marcus Banoub, Diman RVTHS (Mass.). Back row L to R: College/postsecondary medalists—Silver-Aaron Jencks, Kirkwood Community College (Iowa); Gold- Spencer Brocksmith, State Technical College of Missouri (Mo.); Bronze- Ryan Knepel, Fox Valley Technical College (Wisc.) and national technical committee member Kevin Gulliver.
■ 서울과 샌프란시스코에서 7일 동시 공개행사
□ 이달 말 한국 출시를 시작으로 글로벌 시장 순차 공급
■ ‘쿼드 DAC’과 ‘B&O’의 만남… 섬세하고 깨끗한 원음의 감동 전달
□ 세계 최초 ‘32비트 하이파이 쿼드 DAC’ 탑재 스마트폰
□ ‘B&O 플레이’와 함께 튜닝한 세계 최고 수준 오디오 기능 탑재
■ CD 음질 보다 6.5배 뛰어난 ‘24비트 하이파이 녹음’ 가능
□ 오디오 녹음앱: ‘기본’, ‘콘서트’, ‘사용자 설정’ 등 사용 환경에 따라 선택
□ 자신만의 음원 제작이 가능한 ‘스튜디오 모드’ 기능: 미리 녹음된 반주에 자신의 노래나 악기연주를 더해 녹음
■ 전문가가 찍은 것 같은 흔들림 없는 동영상 촬영 가능
□ 흔들림 보정 기능: 전자식 손떨림 방지(EIS) + 디지털 이미지 보정(DIS)
□ ‘비디오 전문가 모드’에 ‘하이파이 비디오 레코딩 기능’ 추가: 시냇물 소리, 발자국 소리 등 현장의 세세한 소리까지 24비트로 담아
■ 세계 최초 전?후면 광각 카메라 탑재
□ 후면 135도, 전면 120도 광각 카메라 탑재
□ ‘하이브리드 오토 포커스’ 탑재, 세 가지 포커스 방식으로 동시 측정
■ ‘세컨드 스크린’ 등 멀티미디어 기능 강화한 사용자 경험(UX) 제공
□ 밝기 높이고, 글자크기 키워 시인성 개선한 ‘세컨드 스크린’ 탑재
□ 최신 ‘안드로이드 7.0 누가’ 기반의 UX로 사용 편의성 높여
■ 견고함을 갖춘 실용적인 아름다움
□ 알루미늄 소재의 후면 배터리 커버
□ 상?하단에 충격에 강한 ‘실리콘-폴리카보네이트’ 사용
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
The soldered up M2FC board, Martlet 2's flight computer.
The flight computer features three K-type thermocouple inputs, three strain gauge half-bridge inputs, three 1A pyrotechnic outputs, a full IMU (±20g and ±200g 3axis accelerometers, 3axis gyro and magno, barometric pressure), a micro SD card for datalogging and a serial interface to the radio and other peripherals. It's powered by an STM32F405VGT7 32-bit ARM microcontroller.
Fore more details on the schematics, see: www.cusf.co.uk/2014/07/martlet-2-electronics-schematics/
The PCBs were sponsored by Cambridge Circuit company, thank you!
Investigating why a car key fob is un-reliable. Notice how the pin of the battery holder is no longer soldered to the board.
This is the human interface for the contraption. The backbone is an Arduino Mini Pro. It's connected to the camera unit via a 315mhz RF link and takes input from the user via five potentiometers and three pushbuttons
The back-left wall of this store has the electronics section, formerly in the front-left part of the store.
Микросхемы GAL(Generic array logic) — предшественники FPGA и CPLD.
AMD Palce16V8h это 32x64 массив элементов AND.
Размер кристалла — 2434x2079µm, технология 1µm.
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.
I forgot I had this one. While poking around for something else, there it was. You know you have too much stuff when that starts happening. Can't even remember where I bought it. If it was ebay then I paid too much.
Electronics Hobby
Building a new components-cabinet.
Hacker (hobbyist)
In home computing, a hacker is someone who modifies software or hardware of their own private computer system. It includes building, rebuilding, modifying, and creating software (software cracking, demoscene), electronic hardware (hardware hacking, overclocking, modding), either to make it better, faster, to give it added features or to make it do something it was not originally intended to do. Hacking in this sense originated around hobbyist circles discussing the MITS Altair at the homebrew computer club.
Hacker artists[edit]
See also: Fractal art, algorithmic art and interactive art
Hacker artists create art by hacking on technology as an artistic medium. This has extended the definition of the term and what it means to be a hacker. Such artists may work with graphics, computer hardware, sculpture, music and other audio, animation, video, software, simulations, mathematics, reactive sensory systems, text, poetry, literature, or any combination thereof.
Dartmouth College musician Larry Polansky states: "Technology and art are inextricably related. Many musicians, video artists, graphic artists, and even poets who work with technology—whether designing it or using it—consider themselves to be part of the 'hacker community.' Computer artists, like non-art hackers, often find themselves on society’s fringes, developing strange, innovative uses of existing technology. There is an empathetic relationship between those, for example, who design experimental music software and hackers who write communications freeware." [3]
Another description is offered by Jenny Marketou: "Hacker artists operate as culture hackers who manipulate existing techno-semiotic structures towards a different end, to get inside cultural systems on the net and make them do things they were never intended to do." [4]
A successful software and hardware hacker artist is Mark Lottor (mkl), who has created the 3-D light art projects entitled the Cubatron, and the Big Round Cubatron. This art is made using custom computer technology, with specially designed circuit boards and programming for microprocessor chips to manipulate the LED lights.
Don Hopkins is a software hacker artist well known for his artistic cellular automata. This art, created by a cellular automata computer program, generates objects which randomly bump into each other and in turn create more objects and designs, similar to a lava lamp, except that the parts change color and form through interaction. Says Hopkins, "Cellular automata are simple rules that are applied to a grid of cells, or the pixel values of an image. The same rule is applied to every cell, to determine its next state, based on the previous state of that cell and its neighboring cells. There are many interesting cellular automata rules, and they all look very different, with amazing animated dynamic effects. 'Life' is a widely known cellular automata rule, but many other lesser known rules are much more interesting."
Some hacker artists create art by writing computer code, and others, by developing hardware. Some create with existing software tools such as Adobe Photoshop or GIMP.
The creative process of hacker artists can be more abstract than artists using non-technological media. For example, mathematicians have produced visually stunning graphic presentations of fractals, which hackers have further enhanced, often producing detailed and intricate graphics and animations from simple mathematical formulas.
en.wikipedia.org/wiki/Hacker_(hobbyist)
Seen Here: The PCB assembled: Hello, World!
So, today my PCB for the LED matrix arrived from BatchPCB! For what I paid, the PCB arrived fairly quickly - I ordered it on the 15/02 I believe, and it arrived 11/03 -- 26 days, which is pretty good (they state 19 business days).
The quality is very, very impressive - far better than anything I could pull off at home. The silkscreen and soldermask makes it look really nice, too.
Soldering it was a joy, although there was a LOT to solder and it's all surface mounted.
I had a few problems at first; it wasn't lighting the matrix at all properly but I soon realised with my new design (transistors on the cathodes) I have to write the transistors HIGH to get a LOW on the cathode, so a quick line of code changed to get that working.
Then for some reason the top half of every letter was flipped. It turns out this was my fault: I messed up when making the package for the LED matrix in Eagle, swapping the matrix's 5th cathode for my system's 8th, 6th for 7th, 7th for 6th and 8th for 5th. This was fairly easy to fix in code, however.
Finally USB isn't working to program or communicate, but I can configure the FT232RL chip (after all, it's sending the clock pulse that's driving my ATmega168). I think I have an idea of what's causing this, but I'm not sure yet.
Have an electrifying weekend.
Please don't comment with (blinking or self-promoting) images.
And please respect the copyright on the photos in my photostream.
I need to monitor the temperature variation of one of my vivariums over time in preparation for obtaining a Royal Python. i want to make sure it doesn't get too hot or too cold.
I've been gradually acquiring and building little modules to plug in to breadboard and as I had the right bits I knocked up this circuit. Every second it displays the temperature on the LCD and sends the temperature to a remote server for recording.
www.cyberspice.org.uk/blog/2009/10/29/boarduino-vivarium-...