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As you can see it's not that clever hardware wise, basically just five pots and a mess of wires. The control jack socket is wired to the pot's wiper so that you can adjust the level to suit, whatever you have plugged in - sensors, children etc.
This is a batteryless shunting voltage regulator for a small solar panel. I made this one in order to use my testpanel for charging mobile devices. For more info and the schematic, check jiskar.nl
The X maschine
The 2007 Alpine demo car is “eXperience”. The name represents the concept of Alpine´s expertise in iPod connectivity and most speedy transmission.
Featuring 6 PDX amplifiers, 2 Type-X subwoofers, 9 Type-X speakers, The PXA-H701 and the iDA-X001 (plus a lot more!), this high-end demo car showcases just how fantastic Alpine´s “Type X” products are.
One of the main highlights is the centre position for the driver, to enjoy the music at it´s best. The “eXperience” shows an elegant and sleekl designed demo car.
It took the Alpine installers 2 ½ months to create such an amazing demo car.
Old radio made of bakelite. A Philco Transitone from 1948.
Lava lamp still works. Radio would take some repair, but I bet it could work too.
Takoradi, Ghana, Africa
Papa Andoh mobile phones & home appliances
Microsoft Lumina
Orange "Make it Happen" T shirt.
Random camera PCB I've been thinking about recently... I got a lot of these cameras broken from ebay a while back - Have been planning to reuse the sensors (they're rather nice, ~8mp-ish I think), but need to do some detective / reverse engineering work. Not something I have time for in the very near future.
Almost ready to test.
Input is 50V p-p AC from a wall wart. Output is ±1–24VDC (trimmer adjusted) regulated by a standard LM317/LM337 circuit.
Pins underneath meet the pair of rails on a standard breadboard.
Both regulator circuits were tested on the breadboard first, so I'm just looking for soldering and wiring errors. And I need to add the 2 x Cadj capacitors and one diode to feed the negative smoothing capacitor.
The Adafruit protoboard is only just big enough…
This Kmart opened Halloween 1994 as a Super Kmart then in 2010 the deli, meat, and bakery sections were removed and became a normal Kmart
>>>>>>>>>> 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).
Taken on macro mode, under natural and green light, and then monkeyed with in software. A selection of Amperex 7534, 6DJ8 / ECC88 and 12AX7, Telefunken and Amperex EL86 / 6CW5, and General Electric 6CX8. Most are OEM branded by Hewlett-Packard.
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.
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.
I decided it needed some hot glue, to act as an insulator, otherwise it would be a pretty fragile little thing.
■ 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.
Poi operational.
Do you know how difficult it is to apply a logic probe to a circuit that has two modes: blinding blue light and blinding red light?
(WARNING: do not stare at project with one remaining eye)
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.
(rolling stones - 1965). who knew "the stones" were so far ahead of their time when jagger and richards wrote this song. they had the foresight to see cloud computing 47 years ago! brilliant.
btw, this toshiba ultrabook with the intel atom processor is the lightest notebook ever made.
it's so light, that they actually had to velcro it to the table. otherwise it would've floated away.
Renae Pippel uses virtual reality goggles in the VR lounge at Faraday Future's booth to see what its like to drive a Faraday Future FFzero1 concept car at the 2016 International Consumer Electronics Show (CES) in Las Vegas, Nevada, USA, 06 January 2016. Photo: Jason Ogulnik/dpa