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This work of art is inspired by the form of electronic circuits. It comprises, in its central part, a square covered by numbers 1 and 0, that is to say, the two states of signals in digital electronics. It also includes, on the left and right of the square, some words that summarize the main consequences, positive or negative, of digital electronics. These words, and the central square, are arranged on a support covered by the word "electron".Technique: paper, cardboard. Size: 82 x 29 cm.
LEO III circuit Board UK. 1963-1964. A complete LEO III computer installation, with magnetic tape decks, paper tape readers, printers and other peripherals would have stretched approximately 35 metres. The museum has 22 large cabinets from a LEO III, the biggest segment of one to survive in a museum.
Seen Here: The PCB all soldered and with one LED matrix fitted.
Annoyingly, SparkFun are out of stock of the matrix I'm using, so I'm stuck with just one for the moment (can't find them ANYWHERE ELSE D: ).
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.
■ 기존 화이트, 골드, 블랙 포함해 ‘G3 Cat.6’ 색상 5개로 확대
■ ‘G3’와 사양, 디자인 동일…쿼드HD, 레이저 오토 포커스 등 탑재
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I have gone nuts in recent month with shopping for electronics. First it was the video camera; then the laptop. The iPod Touch came just a couple weeks ago. My monitor for my computer was acting up and I decided to look for a new one. For just a few dollars more over the price of a regular computer monitor, I was able to get an HD TV that can also be my monitor.
I'm in fat city, and a little broke. Oh well. What's retirement for anyway?
Pentax *ist DS2, RMC Tokina II 28/2.8, (CF=42.5mm),
Manfrotto 390 Jr
In the photo:
Pentax 6X7 MLU
SUPER-TAKUMAR/6X7 105/2.4
Manfrotto 029 3W-Head
Manfrotto 190B Tripod
Manfrotto 268 Ballhead
CF Photo+Video Technik Ash Tripod
Manfrotto 028 Tripod
This device tests the various PC boards throughout the train. It doesn't tell them what's wrong -- just says that it's not working properly.
Alpenflex model IS TLR camera, made by Hachiyo Optical
Company of Japan in 1952.
© 2014 Craig Roberts
2014-10-10 011
My trusty and really awesome Holga. It has been modified to do "bulb" setting and it also has a waist level viewfinder, that I have never used. Whats the rule "shoot from the hip"? Thats usually what I do.
Its PINK!!
■ 11일부터 중국 최대 온라인 쇼핑몰 ‘징동(京东)’ 통해 ‘LG G3’ 판매
■ LG 전략 스마트폰 중 처음으로 중국 3대 통신사향으로 공급
■ 소비자 요구에 맞춰 2개 통신사 회선을 동시에 사용하는 DSDA 지원
■ 세계 최대 스마트폰 시장서 모바일 사업 지속 강화
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■ 스마트씽큐 센서와 허브에 아마존의 사물인터넷 서비스 결합
□ 스마트씽큐 허브에 음성 인식 서비스 ‘알렉사’ 연동해 가전 제어
□ 스마트씽큐 센서에 쇼핑 시스템 넣어 세제나 음료 등 구입
□ 날씨, 사용자의 일정을 화면과 음성으로 알려주고 스마트폰의 음악도 재생
□ LED 조명, 플러그, 모션센서 등 ‘스마트씽큐’와 연동 가능한 액세서리 소개
■ 디스플레이 탑재한 새 스마트 냉장고 공개
□ 투명한 매직스페이스에 터치, 노크온 기능 구현
□ 초광각(超廣角) 카메라로 야채실과 수납공간 촬영…외부에서 식품 주문 시 유용
□ 냉장고 사용 행태와 환경 변화를 스스로 학습하면서 최적으로 가동
■ LG전자 대표이사 H&A사업본부장 조성진 사장은 “다양한 파트너들과의 협력해 고객들에게 LG만의 차별화된 스마트홈 솔루션을 제공하겠다”고 강조
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■ 11일부터 중국 최대 온라인 쇼핑몰 ‘징동(京东)’ 통해 ‘LG G3’ 판매
■ LG 전략 스마트폰 중 처음으로 중국 3대 통신사향으로 공급
■ 소비자 요구에 맞춰 2개 통신사 회선을 동시에 사용하는 DSDA 지원
■ 세계 최대 스마트폰 시장서 모바일 사업 지속 강화
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"IPS, 시네마 3D 기술로 울트라HD TV 대중화 주도"
■ 예약판매 3주간 900대 판매, 국내 시청 환경 고려한 49형 호응 높아
■ IPS, 시네마 3D 기술로 완성한 압도적 화질 선사
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IFA 2014
Miss IFA stellt die ersten Produkt-Highlights vor: Panasonic LUMIX G DMC-GH4
IFA 2014
Miss IFA presents the first IFA Product Highlights: Panasonic LUMIX G DMC-GH4
■ 지난해 첫 출시 후, 꾸준한 인기를 얻고 있는 ‘32형 클래식 TV’ 후속 제품
■ 클래식한 느낌과 간결한 디자인으로 인테리어 효과 극대화
■ ‘스포츠 모드’, ‘힐링 모드’ 등 특화기능 탑재로 사용편의성 강화
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Electronics hobby
Designing and building a high power amplifier capable of driving low impedance (as low as 2 Ohm’s @ 50 Vpp) loads.
www.diyaudio.com/ see alias FdW
History of DIY audio
Audio DIY came to prominence in the 50s to 60s, as audio reproduction was relatively new and the technology "complex," audio reproduction equipment, and in particular high performance equipment, was not offered at the retail level. Kits and designs were available for consumers to build their own equipment. Famous vacuum tube kits from Dynaco, Heathkit, and McIntosh, as well as solid state (transistor) kits from Hafler allowed for consumers to build their own hi fidelity systems. Books and magazines were published which explained new concepts regarding the design and operation of vacuum tube and (later) transistor circuits.
While audio equipment has become easily accessible in the current day and age, there still exists an interest in building one's own equipment, including amplifiers, speakers, preamplifiers, and even CD players and turntables. Today, a network of companies, parts vendors, and on-line communities exist to foster this interest. DIY is especially active in loudspeaker and in tube amplification. Both are relatively simple to design and fabricate without access to sophisticated industrial equipment. Both enable the builder to pick and choose between various available parts, on matters of price as well as quality, allow for extensive experimentation, and offer the chance to use exotic or highly labor-intensive solutions, which would be expensive for a manufacturer to implement, but only require personal labor by the DIYer, which is a source of satisfaction to them.
Yes, it's blurry. But, see in the middle, that row of four surface mount devices? The last one is sticking straight up. That probably has something to do with why this motherboard isn't working any more.
■ 14형 크기에 무게 980g인 ‘그램 14’ 첫 공개
□ 국내 14형대 노트북 중 최경량 한국기록원 공식 인증
□ 전작 13.3형과 동일한 무게와 두께 적용…스타일리시한 초슬림 디자인 계승
■ 몰입감 높인 21:9 화면비에 곡면 적용한 ‘LG 곡면 21:9 시네뷰 일체형 PC’ 출시
□ 21:9 화면비 일체형 PC 가운데 최대 크기인 29형 대화면
□ 외부에서도 집에 있는 PC의 컨텐츠 즐기는 ‘홈드라이브’ 서비스 탑재
■ ‘그램 15’, ‘탭북 듀오’ 등 다양한 2015년 PC 라인업도 함께 선보여
■ 졸업 및 입학 시즌 맞이 ‘PC아카데미 페스티벌’ 3월까지 진행
■ HE마케팅FD 담당 허재철 상무 “독창적인 디자인과 앞서가는 기술로 PC시장을 선도해 나갈 것”
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“우리집 거실로 프리미엄 영화관이 들어왔다”
■ 30일부터 주문 제작 방식으로 출시
■ 1,100만 화소, 21:9 화면비로 최적의 영화감상 환경 제공
■ 7.2채널 150와트(W)의 하만카돈 기반 名品 스피커 탑재
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