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>>>>>>>>>> click the "ALL SIZES" magnifying glass to see a bigger pic <<<<<<<<<
PARTS
• 2 or 3 12-position rotary switches (or 10-position, whatever you can get)
• 2 pin or banana jacks (to match your test leads)
• resistor assortment from 5 ohms to 1M or greater; gold bands (5% tolerance) are better than silver bands (10% tolerance).
• project box
INSTRUCTIONS
1- Get a box and drill holes for mounting two or three 12-position rotary switches. Drill holes also for the two jacks.
2- Mount the switches and the jacks; label switch positions with corresponding resistor values.
3- Follow this diagram and solder resistors directly to the lugs of the rotary switches.
NOTE: If you solder the resistors so their unsoldered leads extend the opposite direction of the switch's shaft, these leads can be gathered together and soldered at once, connected to the bus wire terminating in point "A".
• The first switch would provide the lowest resistance, the next would provide mid-range resistors, and the final switch would be wired to the resistors with the greatest resistance.
• As seen, the 12th lug of the depicted switch connects to the next switch in the array. Naturally, the final switch in the array would have its 12th lug connected to the final resistor in the matrix.
PANEL
To mark the panel for the resistor values:
1- Turn the mounted switches to position "1" (doesn't matter at all how you orient the switches, just turn them to their lowest resistor settings).
2- Place knobs loosely on shafts and turn their pointers to wherever you want "1" (your lowest resistor value) to be located around the dial (near top or bottom of dial, usually).
3- Once all pointers are angled to this position, tighten their set screws to keep them in place.
4- With your marker, put dots where the pointers point as you click them all around their orbits.
5- Label these dots with the corresponding resistor values. Position "12" can be marked with an arrow pointing to the next switch.
USAGE
1- Set all rotary switches to "12" for starting position. This will provide the greatest resistance available (this is safest on the circuit). Plug your test leads in.
2- Begin turning the LAST dial downward and observe the response of the circuit (LED brightness, audio output, circuit clocking - whatever you're after).
3- When you get to position "1" on this switch, turn the next rotary switch to position "11" to continue the resistance decrease, and so on until you reach the resistance value desired.
4- Observe the resistance the dial is pointing to; grab another resistor of the same value, and your green LED will never again scare you with that ember-like, off-yellow, over-voltage, "Seeya in LED Halvala" glow.
A pair of cufflinks made out of some spare ICs. They were suprisingly quick and easy to make.
Instructions on Photo 1.
My solder joints are looking a lot better now that I have a good soldering iron (Weller 25W) and smaller solder (0.32mm versus 1mm).
No, this is not the Google Earth view of some city. It is a macro of a silicon wafer containing VLSI circuits. Each of those blocks is about a centimetre on each side and contains numerous transistors.
Thanks a lot to my friend in our university's VLSI lab for allowing me to take this photo.
A close up of an old motherboard of mine taken with a 50mm prime and a reversing ring to get an extra magnified macro.
Product image of components from the Jennic range - www.sequoia.co.uk/components/manufacturer_list.php?m=12&a...
Jennic is a market leader in ZigBee, 6LoWPAN, IEEE802.15.4 wireless microcontrollers, modules and evaluation kits.
Tough only goes so far. Don't drop the machine with a USB cable plugged in! Hint: The jack's not supposed to be lifted off the board like that.
Nacmias Auto Dealer
1249 Coney Island Avenue
Brooklyn, NY 11230
Phone: 718-377-6159
Email: nacmiasmobil@gmail.com
I decided it needed some hot glue, to act as an insulator, otherwise it would be a pretty fragile little thing.
USBeast
1011 W. Foothill Blvd.
Azusa, California 91702
(626) 408-8457
Revolutionary New USB Charging Device Set To Launch via
Crowdfunding Campaign.
Mobile devices to charge 400% faster than standard USB chargers.
Los Angeles, CA – July 7, 2015. USBeast Electronics has developed an on-the-go USB charging device that will change the way consumers charge their mobile phones, tablets, cameras and even the latest Macbook and Google Chromebooks. With the ability to utilize 2.1 amps of charging power, USBeast can charge a dead iPhone at least 6 times to a full charge without the use of a wall outlet and do so 4 times as fast.
Increased use of technology in all areas of our lives has highlighted an already nagging problem: Too many electronic devices and not enough charging capability. On site workers, outdoor enthusiasts and people living under the constant threat of a natural disaster are increasingly faced with the problem of finding adequate ways to charge their USB powered devices.
The USBeast solves that problem like no other USB charger on the market today. With millions of cordless power tools and camping accessories already sold, there’s an established mass market of people who can use their cordless tool batteries to charge their mobile devices. The USBeast utilizes many different brands and voltages of cordless tool batteries to simultaneously charge 2 mobile devices. For example, an iPhone and iPad can both go from 0% to fully charged at the same time, without the use of a wall outlet. There is no other charger on the planet with that capability.
After several prototypes, the USBeast design team has worked feverishly to approve the version which is now ready for mass production. The final USBeast design has been field tested and sold online in small quantities, receiving positive feedback from both consumers and testers alike. USBeast Electronics has a live crowd funding campaign on Kickstarter.com and pre-orders of the USBeast are now being taken! The company is also selling USBeast Brand merchandise to assist in generating the financial resources necessary to mass produce and bring the USBeast to market. When the funding goal of $15,000 is reached, USBeast Electronics will begin full scale manufacturing with the finished product proudly being made in the USA.
"We are committed to revolutionizing the way consumers charge their USB powered devices and dedicated to making this product a huge success,” says Jonathan Williams, founder of USBeast Electronics and The Artisans Studio. “We will strive to provide the best quality product and update our backers every step of the way.” Williams continues, “And provide the assurance that all USBeast orders will be shipped on time.”
This Kickstarter.com campaign will end on August 21, 2015
USBeast Electronics is on a mission to create the next generation of mobile electronic charging products for the current and next generation of mobile devices. For more information contact: or email sales@getusbeast.com.
Jonathan Williams
sales@getusbeast.com
(626) 408-8457
■ 세계 최초 LTE 통신 모듈 탑재해 MWC 2015서 첫 선
□ 스마트폰 없이도 VoLTE(LTE기반 음성통화), 빠른 데이터 송·수신
□ 다자간 동시 대화하는 ‘LTE 무전기’ 기능
□ 위급상황에서 버튼 하나로 통화 연결되는 ‘안전지킴이’ 기능
■ 한층 진화한 스마트워치 UX(사용자 경험)
□ 스마트워치에 세계 최초로 NFC기반 월렛 탑재해 간편 전자 결제
□ 음성인식 통한 외국어 번역 기능
□ 야외 레포츠 활동 시 지형·위치·방향정보, 개인 심박수 정보 제공
■ 세계 최대 대용량 배터리 장착
□ 전작 대비 약 1.7배 늘어난 700mAh 대용량 배터리
■ 사용 편의성 높인 디자인 채택
□ 메탈 바디 측면에 3개의 물리 키(용두) 적용… 한 번만 누르면 각각의 특수기능(설정화면가기, 화면전환, 뒤로가기 등) 빠르게 실행
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
Now you have an animal that twists in the middle, and provides analog control to your circuits. Try other animals! Dolls are good, too- you can put pots on the arms, legs and head, if you're clever. Or mix and match!
Recently I bought 4 different coloured led-strips(red, green, blue and white) with 24 individual leds and fed by 12V (75mA). Apart from swaying the leds in patterns they are nice in the white-box for colour lighting. Easier to handle than gels and they create interesting effects. I made a little "switch box" and use plain paper for diffusing. The - flexible - led strips are mounted in aluminium with little strips of velcro so they can be used together or separately.
This is the LiniStepper step motor driver built on a (dual) breadboard.
I wanted to control it using my arduino but couldn't get the board to work. So I ended up building a simpler version using only the TIP122 and a single resistor per input. This is ok because the TIP series has internal flywheel diodes and shut off. Additionally I still use the 5w 1ohm resistors to provide a level of current limiting
Found this piece of test equipment in Dad's workshop. He was an Electronic Technician at Western Electric - AT&T - Lucent for many years and aquired a whole workshop full of electronics gear. I'm slowly going through his things and deciding what to throw out and what to keep.
This is a keeper! :-)
Daily Shoot - #ds610 - July 19, 2011
Make a photograph today of something that you've not made a photograph of before.
Daily Shoot - #ds689 - October 5, 2011 - Make a photograph that illustrates technology today.
From "Tools and Technology" - Accurate signal data is the backbone for research and product development for industries as diverse as electronics, computing, automotive, and aerospace. These instruments have had many face lifts, including the obvious move from analog to digital technology, and a shift from cathode ray tubes to LED-enabled display screens.
From the Daily Shoot Blog - October 5, 2011:
Wed Oct 05, 2011
Retiring the Daily Shoot
Tomorrow will be the last day that a new Daily Shoot assignment will be posted. After that, the site will be mothballed. It’ll eventually disappear into the depths of the bit-bucket.
Mike and I sincerely hope that everyone that participated—some 2700+ photographers in all—had a fun time, learned a few things about their own photography, and keep at it on a regular basis going forward. It’s a rewarding art and one that rewards consistent practice.
From Goldfinch593 (a.k.a. ~me~)
I decided to share this ancient technological wonder from my Dad's workshop with everyone here at Daily Shoot tonight after learning from my dear Sister-in-Law, muffet68, that Daily Shoot will be shutting down tomorrow. I am sad to see it go and will always fondly remember the wonderful creativity that was generated on this site by the many talented photographers here.
Thanks to Duncan and Mike for all that you did to keep this site up and running. It was a fun ride!
Tuesday, September 16, 2014 - Happy "Digging In The Archives Tuesday"... !
Macro of some 'old school' electronics, meaning pre-surface mounted devices and computer chips. Circuit board from an old battery backup emergency light.
the camera can't handle the bright display with a dim room but after a day or so, I turned the display red.