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The Arduino Ethernet Shield 2 allows an Arduino board to connect to the Internet. It is based on the Wiznet W5100 ethernet chip providing a network (IP) stack capable of both TCP and UDP. The Arduino Ethernet Shield 2 supports up to four simultaneous socket connections. Use the Ethernet library to write sketches which connect to the internet using the shield.
The ethernet shield connects to an Arduino board using long wire-wrap headers which extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top..
The latest revision of the shield adds a micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino Duemilanove and Mega (using the Ethernet library coming in Arduino 0019). An SD card library is not yet included in the standard Arduino distribution, but the sdfatlib by Bill Greiman works well. See this tutorial from Adafruit Industries for instructions (thanks Limor!).
The latest revision of the shield also includes a reset controller, to ensure that the W5100 Ethernet module is properly reset on power-up. Previous revisions of the shield were not compatible with the Mega and need to be manually reset after power-up. The original revision of the shield contained a full-size SD card slot; this is not supported.
Arduino communicates with both the W5100 and SD card using the SPI bus (through the ICSP header). This is on digital pins 11, 12, and 13 on the Duemilanove and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used to select the W5100 and pin 4 for the SD card. These pins cannot be used for general i/o. On the Mega, the hardware SS pin, 53, is not used to select either the W5100 or the SD card, but it must be kept as an output or the SPI interface won’t work.
Note that because the W5100 and SD card share the SPI bus, only one can be active at a time. If you are using both peripherals in your program, this should be taken care of by the corresponding libraries. If you’re not using one of the peripherals in your program, however, you’ll need to explicitly deselect it. To do this with the SD card, set pin 4 as an output and write a high to it. For the W5100, set digital pin 10 as a high output.
The shield provides a standard RJ45 ethernet jack.
The reset button on the shield resets both the W5100 and the Arduino board.
Available soon!
La Contaflex Super seconda serie prodotta dalla Zeiss Ikon tra il 1962 ed il 1965 é caratterizzata dalla forma piú moderna della calotta rispetto alla precedente versione, dalla mancanza della caratteristica rotellina frontale per la regolazione dei diaframmi, dall'adozione del piú moderno otturatore Synchro-Compur-X e dalle dimensioni allungate del corpo per poter utilizzare il magazzino intercambiabile della Contarex, al contempo l'obiettivo Tessar fu ridisegnato per ottenere migliori prestazioni e come tradizione non era una macchina alla portata di tutti, costando circa il doppio di una reflex Canon. Questa Contaflex é l'unica della serie ad avere le ghiere dei tempi e dei diaframmi completamente indipendenti permettendo cosí una completa libertá di scelta delle impostazioni.Infatti il modello precedente aveva la ghiera dei diaframmi vincolata a quella della sensibilitá é ció impediva l'impostazioni di alcuni diaframmi al di fuori di quelli consentiti, mentre i modello susseguenti avranno il blocco della ghiera automatico per l'impostazione a prioritá di diaframmi. Essa é tutt'oggi una delle piú affascinanti fotocamere di produzione tedesca, e possederne una da senso al motto "Deutsche Wertarbeit", ovvero "un prodotto di alta qualità tedesca" che doveva essere conosciuto, e riconosciuto, in tutto il mondo. Malgrado l'elevato prezzo essa veniva venduta in perdita dalla Zeiss ma era il cavallo trainante di tutta la produzione.Dotata di esposimetro esterno al selenio con indicatore sulla calotta e nel mirino, la Super fu secondo la pubblicitá dell'epoca la piú venduta reflex di tutti i tempi.
Purtroppo la Contaflex fu il canto del cigno dell'industria fotografica tedesca, di li a poco sommersa dalla marea giapponese. La Contaflex é un'oggetto superbo da tenere in vetrina o da portare in giro ed usare orgogliosamente mostrando una perizia fotografica d'altri tempi, altro che giocattolini digitali!
Wrapped around this cardiac balloon catheter are temperature and EKG sensors and LEDs. The wires are stretchable coils.
It is manufactured with a lift-off MEMS process. The etched silicon is then stretched and attached to a polymer backing. Silicon usage is minimized over the substrate and the ensemble is quite flexible, to survive inflation and deflation of the balloon.
it's tetris, in an altoids tin!
inside is an Arduino chip on a custom pcb that connects it to this LCD ($1 from sparkfun, talks over SPI) and four buttons. rotation works properly, collision detection seems to work fine, etc.
the eagle files are on randomskk.net/projects/arduino_tetris while the code is on github.com/randomskk/arduino_tetris (note that it's designed to be compiled from a makefile but you can strip out the WProgram and main() function at the end to make it compile from the arduino IDE)
I made it for a friend's birthday present and he seems to really like it
Bits and bobs
Pictures taken during exercising my hobby (electronics) and building/disassembling amplifiers and/or upgrading a record player tonearm and pre-amplifier. Anyway, a text was needed, to describe this lot, and here it is (the text and the lot, enjoy the pictures :)).
Innards of an old piece of electronic gear, part of that same stash of electronics in an old factory.
There was no bird crap on this, probably because it was on a middle shelf, but the lone feather made its way onto the tubes anyway.
More images from this site are HERE.
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This is an EMI BTR-2 used in recording studios and broadcast, most famously used in the BBC and EMI's Abbey road studios from 1952 onwards. The recorder consists of large valve powered modules located inside the recorder, a modular tape deck and modular front panel interconnected by a large wireing loom. The BBC kept on useing these machines well into the 80's but modified the electronics to transistor stereo which sadly had its drawbacks.
I am always looking to purchase these machines if anyone knows of one for sale :-)
a special thank you to flikr member Fixerbob for donating this wonderful machine.
So after a lot of experimentation here is the setup I have settled on for the portal turret. The breadboards are only for the prototype stage and won't be part of the final setup. The turret has a small motion sensor in the lower part of the picture that is connect to the arduino. Every time motion is detected the setup randomly plays one of 17 audio clips through the sound board(the red one). The sound module in turn is connected to a small speaker that has surprisingly good sound quality for 4 dollars. I really wanted to make sure tracks were not repeated too frequently so the system randomly shuffles the 17 tracks and then plays 1 track each time motion is detected. After all 17 tracks are played, the system reshuffles the list again. As an added bonus there will be a small button on the turret that when pressed will play the portal theme song. The system will have the ability to be powered by either the internal battery source or with the flip of a button, be plugged into the wall with an adapter so it can be left on without worry of constantly needing to change batteries. The only other piece not featured which I will post images of soon is the eyeball. The 4 LEDs on the left are part of the eye and glow bright red.
A simple counting machine I designed and built for my son. Select the value with the dial in the middle, then push the green button to add it to the total or the red button to subtract it. The case is laser cut from bamboo.
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These ones were shot with CAnon 5D and Pentax 55mm SMC takumar which was attached to the Canon with an Adapter. The 55mm now focuses up to 20cm with a fantastic Bokeh, still apperture seems to be fixed at its maximum...
Cameras are CAnon A1 and Pentax 67. The A1 with a Paragon 28mm the Pentax 67 with the ¨small lense¨, the 105, the 55mm is just massive!
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.
I've made this small box that sits in my locker at the local maker-/hackerspace and lets me quickly setup for some electronics work. I'm in the process of building a small adjustable power supply to fit under the drawers. And also see if I can find a soldering iron to fit in there.
The boxes on top are not stored there but the workbench was designed for the them to fit on top. When closed the space up there stores a powerstrip and the lamp. (more info here: nisker.net/projects/mini-electronics-toolstorage-box/)
I've got a large version of this as my home electronics workbench at home : nisker.net/projects/mew
Volkswagen heeft de eerste foto’s vrij gegeven van de Golf R Cabriolet. De 265 pk sterke Golf R Cabriolet komt nog dit voorjaar op de Nederlandse markt.
Chevrolet Sportvan 108 Deluxe. Former operation car for police records of accidents, of the Canton Police St.Gallen, Switzerland, delivered 1969. Still in running condition.The green of the external color does not correspond to the original interior color. Altenrhein, Switzerland, Jan 23, 2008.
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This is a little clock I built playing with hobby electronics and arduino at one point. I don't think I ever got it to work completely right but I like all the little details for this photo.
This was an attempt at an image for next week's Macro Monday's theme (technology) but I think I am going to go another direction for that so posting this now.