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this is incomplete. An ECG based on a schematic from a Wright State University lab I described here. The Green/Yellow leeds going off screen are meant to connect to eletrodes, one on the wrist and the other on the foot. (a 3rd electrode should connect to ground). The AD620 IC Op-amp on the left handles initial gain. The lead from the larger capacitor (1000uF) can be put out to an oscilloscope and you should already see a heart sine wave. atm this leed goes to the first filter (the other IC in the picture). The two white wires are supposed to be a capacitor and resistor instead, but I do not have them on hand and need to get later. Finally, the orange wire going off the board is supposed to be the final output to an oscilloscope, with high,low and dual amplification having taken place. The grey wires are for negative and positive power sources. the resistor to the far left of the breadboard, is a 220ohm which can be removed.
Photos from an article about some different identifying marks on chips. You can read that article here.
Voigtländer Vitrona (1964)
Lanthar 2.8/50 in a four speed Prontor 250 shutter, 1/30 - 1/250 and B
Scale focus
The first camera with a built-in electronic flash:
The batteries and electronics are housed in a bayonet fitting, on the bottom of the camera, pistol grip
A switch in it controls the charge of the capacitor: continuously charged or just at the pressure of it
There's a flash ready indicator in the viewfinder and also on the top plate
GN 9 @ 100 ISO, recycle time 8 - 15 seconds
For automatic operation of the flash, 25 - 400 ISO, the lightning symbol, in the aperture ring must be selected, the aperture will relate to the focus distance
24 x 36 mm exposures on 35 mm film
Filter size 32 mm push-on
This camera was a gift of my cousin António Abílio Dantas Gomes
I invite you to visit my blog at Classic Cameras
My workbench in all it's glory. Believe it or not, I actually get (got) stuff done here, but I'm much happier with my remodeled bench since I moved.
I promised pictures of the new setup and here they are. Its not pretty, it works for now. The c ardboard has to go for anything involving water. I need to find some sort of large rigid plastic cubic cylindar to house all of this in.
■ 모바일 메신저 통해 프리미엄 스마트 가전과 일상언어로 채팅하는 ‘홈챗’ 서비스 개시
□ 퀵 버튼/통합모드, 캐릭터/스티커 등 다양한 콘텐츠 제공
■ 냉장고/세탁기/광파오븐 등 ‘홈챗’ 지원 프리미엄 스마트 가전 출시
□ 냉장고 내 카메라 탑재해 언제 어디서나 보관식품 확인 가능
□ 스마트 세탁기, ‘홈챗’ 통해 원격 제어 및 작동 상태 확인
□ 스마트 광파오븐, NFC와 무선랜 활용해 조리조건 간편하게 설정
■ HA사업본부장 조성진 사장 “고객에게 편리함을 넘어 감동을 줄 수 있는 프리미엄 스마트 가전을 지속 선보이겠다”라고 강조
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A sub-collection within my vintage radio collection. They are by Emerson, Silvertone, Truetone, RCA and GE and they all work.
aspen, colorado
late 1975
inside nick's "mad lab"
part of an archival project, featuring the photographs of nick dewolf
© the Nick DeWolf Foundation
Image-use requests are welcome via flickrmail or nickdewolfphotoarchive [at] gmail [dot] com
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Nice thick steel panel for mounting the encoders. This makes it easier to remove the top panel without scratching things up, and also lets the whole thing take more abuse while not requiring the top panel be made of thicker material. Plus, it just looks nicer not to have the nuts showing through the top panel.
Taken of a solar panel in the middle of the Inner Harbour in Victoria, British Columbia on August 17, 2010.
Shame I couldn't get a sharper image though... =/
Another random side project, got the PCBs back today. See design files at github.com/sgstair/random/tree/master/hrv_monitor/pcb
When my uncle passed away my aunty gave me his trusty old Canon eos 650 along with a 28-70mm F3.5/4.5 lens and 70-210mm F4 lens. I've run through one roll of film so far but not managed to get it developed yet. From the research both lenses seem to have good write ups for old zoom lenses so I will be looking forward to shooting with this camera along with the eos 5 I just purchased :)
Took about 1 1/2 hours in total and was generally very straight forward. There were a couple of awkward places in the construction (shutter springs "C" and "D"!!) and adding a couple of the panels after the sides were attached was a little bit fidly. But on the whole quite straight forward. TBH, I can't see myself using it much after the put the first "I put this camera together" roll through, as I've quite a few other recent purchases to try out, all of which cost about the same, or even less, than this and have adjustable shutter speed, ISO and aperture size (i.e. not a toy) and all have very good lenses to boot! We'll see!
Taken with my Panasonic G1 and Helios 44M-4 58mm F2 lens from a Zenit 11.
Inspired by the Galaxy Note versus iPhone 4S viral photo I decided to take these technology comparison shots.
The Samsung Galaxy Note has a weird size format.
2012 vs 1997.
178 grams vs 1.8 kilogram
1.4 GHz dual-core ARM Cortex-A9 vs 25 MHz ARM 710a RISC processor
1024MB RAM vs 3MB RAM
.
Check out comparison with Sharp Elsimate
Check out comparison with Palm IIIe
IAP creative electronics lab; photo by Christopher Harting, 2009; cps creative_electronics; _DSC4763
A +/- 6V & +/- 12V 42A power supply from the 70's or so. Beautiful wiring, except for the raw 240v adjacent to low signal voltage through the connector plugging into the machine.
If using this image please attribute to "Kitmondo TAM" - www.kitmondo.com/test-and-measurement-equipment
Images from listings on our website Kitmondo.com in the Test and Measurement section. See a range of Test and Measure equipment from across the globe on our site.
“냉장/냉동/김치보관을 마음대로”
■ 신혼부부 및 1인 가구 라이프스타일 반영한 복합 냉장고 선보여
■ 上냉장/中서랍/下냉동 타입, 공간별 냉동/냉장/김치 보관 자유 설정 가능
■ 정창화 한국HA마케팅담당 “라이프스타일에 맞춰 자유롭게 사용할 수 있는 ‘디오스 김치톡톡 프리스타일’ 냉장고 통해 새로운 고객가치 제공할 것” 이라고 강조
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■ 완벽한 원형 디자인 적용한 프리미엄 스마트워치
□ 세계 첫 원형 플라스틱 OLED 적용…가볍고 얇아
□ 메탈바디, 천연 가죽 소재의 스트랩 선택
■ 최적화된 하드웨어, 직관적이고 편리한 UX 탑재
□ 1.2GHz 퀄컴 스냅드래곤 400 프로세서, 410mAh 대용량 배터리 등
□ 심박센서로 건강관리 정보 제공
■ 사용자 편의성 혁신
□ 음성 인식 기반 ‘구글 나우’, 화면이 꺼지지 않는 ‘올웨이즈 온’, 방수 및 방진 기능, 교체 가능한 스트랩 등
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