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Hacking Esquire's E-ink Cover

ptorrone writes "I picked up the Esquire E-inked cover today and took a bunch of high res photos, for the makers out there. It has a programming header, 5-pin ISP, a Microchip PIC 12f629 which is flash programmable, 8 pin, 6 lithium coin cell CR2016s, 3 volts each. Two E-ink screens with flex connections — looks like it was made to be reprogrammed and different screens. The top screen has 11 segments, the bottom has 3. It was designed 2008-06-04. The PCB was made by Forewin, half thickness, 2 layer board (FR4). I think someone out there will likely reflash the PIC and make the segments go on / off at different times and perhaps put other displays on it, there's a little bit of hacking to be had but not that much really."

71 of 205 comments (clear)

  1. Great for the environment by rminsk · · Score: 3, Insightful

    Most of these magazines are going to end up in landfills with all the toxic materials that are in the display, batteries, chips, and PCBs. Thank you Esquire.

    1. Re:Great for the environment by dbIII · · Score: 4, Insightful

      We need a new mod catagory for posts like the above: "blatantly obvious that they did not read the finagaling article".

    2. Re:Great for the environment by Koiu+Lpoi · · Score: 3, Funny

      Oh! Oh! I know this one! "+5 Insightful because the mods didn't read it either"!

    3. Re:Great for the environment by Jason1729 · · Score: 2, Informative

      Wow. And here I was hoping I'd still be able to pick up a couple at the newstand tomorrow before they sell out and I have to pay $20+ each on eBay.

      Someone would have to be an idiot to throw these out when they can sell them for well over cover price. There's a large group of people who have been drooling over these for 2 months.

    4. Re:Great for the environment by Kamokazi · · Score: 4, Insightful

      I think -1 RTFA would suffice.

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    5. Re:Great for the environment by Kamokazi · · Score: 4, Insightful

      For fuck's sake. Why not worry about all those greeting cards with sound chips in them, or all the alkaline batteries, or printer ink cartridges thrown away? Esquire doing a one-time limited run of these is nothing compared to all of the other sources of toxic landfill materials. Quit being a pessimistic asshole and pissing on the downsides of the current popular topic and worry about some real problems.

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    6. Re:Great for the environment by dbIII · · Score: 4, Insightful
      It really does not merit the toxic OMFG think of the F'ing children knee jerk response. If you want to scare people you should at least have read the thing first to get something resembling a clue.

      Which component in paticular do you think is toxic?

    7. Re:Great for the environment by dbIII · · Score: 2, Insightful
      I apologise for the tone of the earlier post. Some days I am up to my neck in luddites terrified that CRT screens will prevent them from having healthy babies. Unfortunately they use the work "toxic" a lot so I grouped the earlier poster with them.

      Electronic waste is a real problem but it is addressed in the article.

    8. Re:Great for the environment by Man+On+Pink+Corner · · Score: 3, Insightful

      I wonder if it occurred to the bright bulb who designed this that the magazine will spend most of its time in total darkness on someone's shelf? A cheap photosensor would have saved at least a few of those 6(!) coin cells, I'd bet.

      That would also have solved the shipping problem, since presumably it's dark as all hell inside a Chinese cargo container.

  2. The internet is getting to me by Aussenseiter · · Score: 5, Funny

    I really need to stop mentally pronouncing it "E-squire".

  3. Oh wow, a magazine with a digital cover by CitznFish · · Score: 5, Funny

    who cares! until the magazine can read to me while I'm on the toilet, and answer my questions, or rebuttal my comments, I don't care how much technology goes into the cover.

    Then again if Playboy gets a digital cover that talks dirty to me then I have the option of recanting my previous statement.

    --
    'mmmmmmmmm.... forbidden donut'
  4. Re:What would happen by CaptainPatent · · Score: 5, Funny

    if someone went and re-flashed all the controllers in the Esquire mags to display porn (first thing that comes to mind is Goatse) instead of the original content?

    Um, then it would display goatse.

    --
    Well, back to rejecting software patent applications.
  5. Recycling instructions by EmbeddedJanitor · · Score: 5, Informative
    --
    Engineering is the art of compromise.
    1. Re:Recycling instructions by Ctrl-Z · · Score: 3, Insightful

      Fascinating.

      All of it can be recycled through your local municipal waste program in the same manner as you dispose of household batteries.

      Last time I checked, household batteries go to the landfill. At least that's what happens where I live. GP has it right.

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    2. Re:Recycling instructions by socsoc · · Score: 4, Informative

      Maybe Canada allows it, but California has had compulsory battery recycling laws since 2006.

    3. Re:Recycling instructions by socsoc · · Score: 4, Insightful

      No they don't have enforcement crews digging through your trash, but many business have drop boxes for their employees/customers, especially places like Best Buy. Retailers that sell rechargeable batteries are required to accept them for recycling. It's so easy to recycle them, and there are free programs, so why not?

      A fear of getting caught isn't the reason people comply, it's to keep hazardous material out of the landfill. The same reason we recycle our electronics through free programs instead of burying them in the backyard (well technically the fee is paid at point-of-sale).

    4. Re:Recycling instructions by Jafafa+Hots · · Score: 4, Informative
      Radio Shacks will take used batteries for free and send them to be recycled for you. Some other places too (Office Depot maybe?)

      Somewhere there's a website with a list of companies that participate in the program.

      --
      This space available.
    5. Re:Recycling instructions by Jorophose · · Score: 2, Interesting

      It would be nice if the post office or local libraries did this. I don't want to go to best buy or radio shack to drop off batteries but I will walk to the library/post office to do so.

    6. Re:Recycling instructions by srw · · Score: 5, Informative

      Sure. I used to work at Radio Shack and we had a battery recycling bin by the till. Every couple of weeks our manager would dump the contents into the trash. I protested, but he said that as long as people thought they were recycling, they felt good and they would come in and buy stuff.

      Oh how I hated that job.

    7. Re:Recycling instructions by srw · · Score: 2, Interesting

      Sorry, but you're wrong. It was all Canadians at that store! (And, to be fair, it was only the manager that approved.)

    8. Re:Recycling instructions by FireFury03 · · Score: 4, Insightful

      http://www.esquire.com/features/recycle-e-ink-cover

      "Simply tear off the cover and dispose of the display unit in your recycling."

      Colour me very surprised if the council don't just landfill the thing because it is too much effort for them to split it up into it's component parts...

  6. Re:What would happen by MattGWU · · Score: 5, Insightful

    I don't get it. What do YOU think will happen?

    All I can see is a company gets a black eye, blames the whole thing on 'those evil hackers', and sends a potentially cool technology away forever.

    And if the first thing you think of when you think of porn is 'Goatse', man, I'm sorry.

    --
    "These people look deep within my soul and assign me a number based on the order in which I joined" --Homer re:
  7. what a waste by TheSHAD0W · · Score: 4, Insightful

    Why are e-ink based e-books so expensive, while Esquire can afford to use it as a cover for their magazine? Something's missing here.

    1. Re:what a waste by Anonymous Coward · · Score: 5, Informative

      My guess would be that this "screen" is not able to display arbitrary images, rather it can only display those images pre-burned onto the "e-ink". The PIC controller merely flips switches on and off at set time intervals or by button presses. Although interesting and indeed hackable, the hardware necessary to do this stuff is already quite cheap (something like $25 for a USB pickit 1 from Microchip.com).

    2. Re:what a waste by MBCook · · Score: 5, Informative

      Right. The display is just like old Game & Watch games (or any other cheap LCD display). They have a bunch of segments (in this case mostly blocks of words) that can be turned on or off. I'd expect that just like LCDs the more segments you have the more expensive it is to manufacture the thing (not including the cost of controller).

      If you watch the little video that the Make blog post links to, you can see how limited it is.

      That said, it seems to refresh quite fast, which the e-books have problems with. I don't know if this is a consequence of the controller (I doubt it, Amazon/Sony would do better), the size of the pixels (smaller pixels switch slower for some reason, perhaps the small traces prevent higher current that can switch things faster), manufacturing (faster switching is too expensive to make an 800x600 screen), or just perception (since the elements are so large it's not noticeable like when you change small blocks of text).

      --
      Comment forecast: Bits of genius surrounded by a sea of mediocrity.
    3. Re:what a waste by neonsignal · · Score: 2, Informative

      The problem with refreshing a pixel based e-ink display is that it has to be erased first (otherwise you get ghost images of the previous page). The erase setting has to be held long enough to achieve a stable and consistent state across the pixels. Some display modes of the ebook readers (eg, the mp3 player updating the play timer on the screen) don't do an erase first, and the update is quite fast (but you do get ghosting).

      For a simple segment display, it doesn't matter if there is ghosting, especially if you are just blinking the display.

    4. Re:what a waste by dontmakemethink · · Score: 2, Informative

      It's called loss-leading promotions. Bars will sometimes book big touring bands hoping to only break even, mostly for the bragging rights of saying that band played their room.

      --

      War as we knew it was obsolete
      Nothing could beat complete denial
      - Emily Haines
  8. But... by christurkel · · Score: 2, Funny

    Does it run...? Imagine...oh never mind.

    --

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  9. Re:What would happen by MBCook · · Score: 5, Informative

    It's impossible. These E-ink displays aren't pixel displays (which could show any image), they are segment based (like a cheap calculator, watch, or old LCD game). They can only display what they have been designed to show. Your only choices are for each segment to be dark or light.

    --
    Comment forecast: Bits of genius surrounded by a sea of mediocrity.
  10. Re:What would happen by MattGWU · · Score: 3, Funny

    Yikes. You need to relax. Go kick back with some Goatse and a beer and mellow out!

    --
    "These people look deep within my soul and assign me a number based on the order in which I joined" --Homer re:
  11. Re:What would happen by snowraver1 · · Score: 3, Insightful

    I could be wrong, but from looking at the video, it appears that the image is static, but the background changes colour. So there is basically 10 or so "pixels" that flash in the background. Changing the image would be impossible, but you could make it flash faster.

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  12. Re:What would happen by TheUser0x58 · · Score: 5, Informative

    Not possible. While e-ink is sometimes used for general purpose displays (Amazon Kindle), for specialized applications its much cheaper if the e-ink can only represent compositions of static images in fixed positions, toggled on or off. Kind of like the difference between a modern LCD monitor and the LCD on a Nintendo Game & Watch-type game.

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  13. Esquire welcomes hacking by Bananatree3 · · Score: 4, Interesting
    Esquire welcomes hackers

    Greetings hackers: Esquire's special E-Ink cover includes two flexible displays that should last for a few months. But the flashing could last longer if you want to try to replace the embedded batteries or find other sources of power. If you come up with inventive ways to extend the power or to hack the circuit board, displays, or the E Ink technology itself, let us know by sending an email to editor@esquire.com and we'll post your results here on Esquire.com. We should tell you, it's not easy and requires some expertise... but you're pretty clever, right? Show us something we don't know.

  14. <blink>? by Hurricane78 · · Score: 5, Funny

    Great. The <blink> tag made it to real life!

    Why?? Whyyyyyyyy........??? ;)

    --
    Any sufficiently advanced intelligence is indistinguishable from stupidity.
  15. simple segments vs. dot matrix by SuperBanana · · Score: 4, Informative

    Why are e-ink based e-books so expensive, while Esquire can afford to use it as a cover for their magazine? Something's missing here.

    11 very large segments versus 480,000 very small segments. PIC programed to go "turn on segment 1, then 2, then 3. Pause. Switch all them off. Repeat"...versus "fully fledged operating system and electronic document presentation system."

    Oh yes, and Equire printed roughly 233,300 of them (one in three of their circulation of 700,000) in one go. That's roughly equal to the 240,000 Kindle units Amazon has supposedly sold in about 10 months.

    Still, the biggie is the simplicity...

  16. Re:? by Overzeetop · · Score: 2, Insightful

    Same reason the original blink made it to HTML - because the can. Reminds you a lot of the Jurassic Park line..."they> were so preoccupied with whether or not they could, they didn't stop to think if they should."

    --
    Is it just my observation, or are there way too many stupid people in the world?
  17. Peter Griffin - Family Guy ? by up2ng · · Score: 4, Funny

    "Putting this cover together really started seven years ago, when deputy editor Peter Griffin..."

    "Hey Lois, Look I'm flashing an Esquire, he he he hehe"
    Stewie: "Oh, good going fat man way to show it to the 21st century"

    --
    Success is not the result of spontaneous combustion, you must set yourself on fire.
  18. Why did Slashdot even run this? by Goaway · · Score: 2, Insightful

    Is this entire thing about how there really isn't any point at all in hacking this thing?

    Gee, thanks for telling us!

    Even the summary has lost interest by the time it reaches the last sentence.

  19. Re:What would happen by dr_dank · · Score: 4, Funny

    Then a bunch of artsy fashionistas would parade around saying that gaping anus is the new black.

    --
    Where does the school board find them and why do they keep sending them to ME?
  20. Re:Ink ink ink by i.r.id10t · · Score: 4, Funny

    Until they are programmable enough.

    When I was in middle school, our typing teacher gave repetitive exercises like that, to do at home or in lab. I happened to have a daisy wheel printer at home for my TRS-80 (m4, 32k and 2 drives!), which was basically a - you guessed it! - typewriter.

    A for-next loop and homework was done... even trimmed the edges so the perforation marks wouldn't be there to tip her off....

    --
    Don't blame me, I voted for Kodos
  21. E-reader. by Ostracus · · Score: 2, Informative

    *sigh*

    All these comments and you all missed this beauty from the last story.

    --
    Shai Schticks:"You don't make peace with friends, you make peace with enemies"
  22. Just got one by dmitrygr · · Score: 3, Informative

    Just bought one. There is a PIC - 12F629 for logic, and 2 8-bit shift registers. There are 6 3-V batteries, whose combined voltage of 18V is used to change eInk state. The e-ink displays show greyscale quite well, if you do not take the full specced time to get them to change state.

    --
    -------
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    2. Make lots of money
    3. Work within the law

    Choose any two.
  23. Re:What would happen by Anonymous Coward · · Score: 5, Funny

    All I can see is a company gets a black eye,

    That's not an eye...

  24. Adn so it begins... by jmorris42 · · Score: 4, Interesting

    Yes this first feeble attempt is fairly lame, a few segments that will burn out in a couple of months and took a fair investment in hardware to pull off. But it won't end here.

    Soon they will put solar collectors on the things to keep it going indefinately, add more segments, etc. Hell, it won't be a generation before they are printing complex enough circuits on the damned things that they will be doing full motion video. On cereal boxes. Or having generic advertising, think shopping carts, seatbacks, etc updating their ad copy over slow radio links. And they already know how to make flat paper speakers so they damned things will be talking whenever somebody is in range.

    --
    Democrat delenda est
    1. Re:Adn so it begins... by Hal_Porter · · Score: 5, Insightful

      And they already know how to make flat paper speakers so they damned things will be talking whenever somebody is in range.

      If they had video cameras, they'd be vandal resistant too.

      "Watch Big Brother! Tonight of ABC! Watch Big Brother Tonight on ABC! Mr Morris, please do not touch this advert, it is the property of Orwell Advertising Inc. Mr Morris, video of the incident has been sent to law enforcement"

      --
      echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
    2. Re:Adn so it begins... by bluefloyd8 · · Score: 2, Informative

      The E-ink material keeps its state (dark/light) when power is removed. So it wont burn out, but rather just stop flashing and be stuck on whatever it was displaying when the batteries dies.

  25. Re:What would happen by pigphish · · Score: 4, Informative

    I think you are misunderstanding the technology. Review: http://www.eink.com/technology/howitworks.html They are very much pixels, dots, or "e-ink microcapsules" which means you should be able to draw any image you want. In the howitworks they seem to have 3 shades: white, black, and grey. When you say you can only show what it was designed to that sounds like if it has an "1" you only get 2 bars like on a calculator. That is really misunderstanding what is actually going on here.

  26. Not so impressive by Lord+Byron+II · · Score: 3, Informative

    When I read this, I immediately ran down to Borders to take a look, since the video link on Esquire's site seemed to be broken. It is not very impressive at all. It's very small, maybe 2" by 4" at the most, and it just flashes. It's kind of a neon light sign effect - you can still read the text even when the segment isn't on.

  27. Re:What would happen by davolfman · · Score: 3, Insightful

    Doesn't mean this one has the contacts laid out for addressable pixels.

  28. you can't "just" recycle them by SuperBanana · · Score: 2, Informative

    All of it can be recycled through your local municipal waste program in the same manner as you dispose of household batteries.

    I don't know about anyone else, but my town had an entire shed at the local transfer station for putting batteries.

    Ie, you can't "just" throw them out, even into the recycle bin at the end of your driveway...at least, not in most municpalities. You're not supposed to dispose of batteries as part of regular trash, regardless of whether they're lead-acid car batteries, lithium, alkaline, etc.

    I don't doubt them on the display, though. It really is just polarized particles that are white on one pole and black on the other, in a suspension, with electrodes...

  29. Re:What would happen by cgenman · · Score: 4, Interesting

    A pixel is just a very small, very square segment. I believe what the grandparent poster is trying to say is that this particular e-ink display is heavily segment based, and proposition supported by how it is being used in the cover and how cheap it is to make.

    The cheap calculator displays are mostly LCD, which power both high end pixel-driven displays and the videogames that come free with your Happy Meal. This particular implementation of the technology appears to fall to the latter.

    Hence, it would be nearly impossible to display anything other than what is currently on the cover without rebuilding the e-ink sheet. In this particular case, we're all winners.

  30. Re:Boring, boring, boring by Anonymous Coward · · Score: 5, Funny

    1995 called - they want their tag back.

  31. Re:What would happen by Anonymous Coward · · Score: 2, Funny

    and vice versa!

  32. Re:What would happen by Anonymous Coward · · Score: 5, Funny

    > In the howitworks they seem to have 3 shades: white, black, and grey.

    Unlike e-books, which apparently also have 3 shades: light grey, dark grey, and grey.

  33. Re:What would happen by nizo · · Score: 5, Insightful

    If the internet has done one thing for me, it has killed whatever curiosity I had to go look at new shock images.

  34. Re:What would happen by erayd · · Score: 2, Informative

    ...Could take the display and turn it into something else like "a dirt cheap e-book reader."

    Not possible without dismantling the panel. What you need to remember about this screen is that it doesn't have the control matrix laid out in a grid (with each line 1px wide) like an ebook reader does. Instead, the matrix is composed of discrete sections. These sections cannot be changed without physically dismantling the screen and replacing the active layer, which can't easily be done without destroying the screen.

    --
    Forget world peace, bring on -1 pointless
  35. Re:What would happen by cgenman · · Score: 3, Informative

    Essentially, the paper itself could display individual pixels, in almost exactly the same way that sections of electroluminescent tape could individually light up, but they would need to be wired for it. The difference between running one magnetic inducing plane to the back of a specially-cut region of the paper and running hundreds of wires all crisscrossing them is significnat. And that, of course, is what separates 2 dollar a foot electroluminescent tape from hundred dollar per 3-inch electroluminescent displays. At the point where you've fabricated electromagnetic matrices to interact with the e-paper, you're far into the cost of a real ebook reader.

    The writer there isn't thinking about the tools at hand in any realistic fashion. Realistic tech writers aren't interesting, hence only the fantastic (and ignorant) survive.

  36. Re:What would happen by LilBlackDemon · · Score: 2, Insightful

    This is probably a little cynical, but they probably got the reprogrammable covers so they could re-use them when they don't sell. Newsstand owners send back the front covers of unsold magazines, newspapers, and other items, and just recycle the rest of the item. Here, the newsstand owners send back a programmable cover, and Esquire's publisher can re-use the cover for a later stunt.

  37. Re:What would happen by Locutus · · Score: 2, Insightful

    from what I saw, they were mentioning "hacking" powering the device when the batteries go dead. And with such large segments, there's just so much you can do with it. Can't even do a power bar unless 1/3, 2/3, 3/3 is of interest.

    What would be interesting is if you could put a homemade backing on it to energize the e-ink and draw custom things inside those segment areas.

    LoB

    --
    "Anyone who stands out in the middle of a road looks like roadkill to me." --Linus
  38. Re:What would happen by Basehart · · Score: 3, Funny

    I think a can of beer would just about fit...

  39. Re:What would happen by Hal_Porter · · Score: 3, Informative

    You can't display Goatse on these things. Each letter is one segment, even from the summary that's clear "The top screen has 11 segments, the bottom has 3".

    I.e. it's not a matrix display.

    --
    echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
  40. Re:? by Patrik_AKA_RedX · · Score: 2, Funny

    Well, for centuries brave men and women were trained in the arcane arts. Each spend decades learning how to fight the evils that lay beneat. But then there was a budget cut...

  41. They're happy to have you hack it by billstewart · · Score: 4, Informative

    Their website says they'd be interested to see what people do hacking it, and if you do something cool, please let them know. They say that it wasn't particularly designed to be easy to hack, and they don't know how, so you'll have to figure it out for yourself, but have fun.

    --

    Bill Stewart
    New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
  42. More details by tehaynes · · Score: 5, Informative

    When I first read the Engadget post about the magazine being available I knew I would be driving around all day to find a copy that I could hack. I finally got a few copies and ripped one to shreds as soon as I got home.

    Firstly, they did not use the active matrix version of the E-Ink display. It is a segmented version. This means that you can not make it do kindle like things. You must use the existing segments. The magazine contains two of these 2x5" displays. The cover display has 11 segments while the inside display has 3. They are both black and 'white' (aka grey) displays although several shades seem possible by varying the switch voltage timing. The color areas are created with a transparent overlay that, of course, is always present.

    (Note: These probably do not match the CN1 and CN2 pin outs)
    COVER DISPLAY SEGMENTS
    1. "THE 21ST CENTURY"
    2. "BEGINS"
    3. 1st box after "BEGINS"
    4. 2nd box after "BEGINS"
    5. 3rd box after "BEGINS"
    6. Both boxes (left and right) of "NOW"
    7. "NOW"
    8. The circle arrow
    9. Bottom box 1
    10. Bottom box 2
    12. Bottom box 3

    INNER DISPLAY SEGMENTS
    1. Left side + 2 of 6 'wheel' segments on both 'wheels'
    2. Middle + 2 of 6 'wheel' segments on both 'wheels'
    3. Right side + 2 of 6 'wheel' segments on both 'wheels'

    The cover display uses a 12 line ribbon connector while the inner display uses a 6 line ribbon with only 4 lines that are completed. One line on each display is a common connection while the others are simple on/off lines.

    THE ELECTRONICS
    The circuit board is very simple with only a few components. There are six CR2016 3V batteries, 2 connectors, 2 HEF4094BT 8 stage shift-and-store bus register chips, 1 12F629 Flash based 8bit CMOS microcontroller, 26 resistors, 2 capacitors and 3 transistors. The 12F629 controls 3 transistors that drive the STROBE, DATA and CLOCK pins, at 15v, of the HEF4094BTs. The HEF4094BTs are connected in a cascade fashion to provide 16 latching registers that directly drive the EInk displays.

    WHAT DOES IT ALL DO?
    The Batteries:
    5 of the 6 batteries (B1-B5) are connected in series to provide the 15v driver voltage that is used to change the segments from black to white and back. The other battery (B6) supplies the 3 volts needed to run the microcontroller. The B1-B5 series and B6 both share a common ground.

    The PIC
    U1 is the Microcontroller. This device controls the sequence of the changes.
    Pin 1 is Vdd (+3vdc).
    C1 is used as a noise filter for the power.
    Pin 2 is not used.
    Pin 3 is not used.
    Pin 4 is used for initial programming only.
    Pin 5 drives Q3 through R5.
    This drives the U3 and U3 STROBE (STR) lines causing the shift register data to be stored in the storage register.
    Pin 6 drives Q2 through R3.
    This drives the U2 and U3 CLOCK (CP) lines which allows serial programming of each register bit prior to storage.
    Pin 7 drives Q1 through R1.
    This drives the U2 DATA (S) line. U3 Data is connected to the O's (PIN 10) of U2 which is a serial output.
    pin 8 is Vss(GND).

    The Transistors
    Q1 drives the DATA (D) line of U2 and is driven by U1 Pin 7.
    Q2 drives the CLOCK (CP) lines of U2 and U3 and is driven by U1 Pin 6.
    Q3 drives the STROBE (STR) lines of U2 and U3 and is driven by U1 pin 5.
    Q1-Q3 base pins are connected to common ground.
    R1,3,5 are used for current limiting to protect U1 outputs.
    R2,4,6 are pull-up resistors for Q1-3 causing
    the output to be 15V when off and ground when on. C3 is a noise filter for the pull-up power rail.

    The Shift Registers
    U1 and U2 drive the displays. They are programmed by U1 via a serial bus. The parallel outputs we'll look at from the perspective of the CN1 and CN2 connectors. These work as a marching train of bits. When the clock goes HI all bits are shifted right and the first one is set the whatever DA

    1. Re:More details by Sj0 · · Score: 4, Insightful

      +1, (Only relevant information in entire thread)

      --
      It's been a long time.
    2. Re:More details by slapout · · Score: 3, Interesting

      "six CR2016"

      How much did the magazine cost? It may have been worth the price just to get those batteries.

      http://www.radioshack.com/product/index.jsp?productId=2062103&cp=&kw=CR2016&parentPage=search

      --
      Coder's Stone: The programming language quick ref for iPad
  43. Re:What would happen by Furan · · Score: 2, Interesting

    Most likely what would usually be a matrix able to address individual capsules is setup to turn on several of them at once in the wiring. This is the only explanation I can find for the low number of pins in what is normally a matrix display with many driver ICs attached directly before going to a controlling device such as the PIC here.

    Instead what we have here is a very low pin count going directly to a shift register controlled by the pic.

    So it's unfortunately obvious from the pictures that no more can be done with the display here. I am, however, interested in reusing the boards for things like fun little robots.

  44. Re:What would happen by somersault · · Score: 3, Funny

    Trust me to get the abnormal girlfriend..

    --
    which is totally what she said
  45. Re:Boring, boring, boring by tsjaikdus · · Score: 2, Funny

    "They'd have put the usual hot chick on the cover if they wanted to encourage nerds to do their usual jerk off all over the raster."

    That would result in a short circuit, electrocuting the nerd. Esquire will be held responsible and go bankrupt.

  46. Re:Recycling sucks! by roaddemon · · Score: 2, Informative

    If you're going to make a controversial statement like the energy cost of recycling is higher than disposing, please back it up with references.

    Here's something I found about the energy benefits of recycling. From http://ohioline.osu.edu/cd-fact/0108.html.

    "Energy

    Recycling aluminum requires 95 percent less energy than producing aluminum from bauxite ore. Making paper from recycled stock requires 64 percent less energy than using wood pulp. Containers made from recycled plastic save up to 60 percent of the energy required to make the same product from virgin material. Recycled ferrous scrap consumes 75 percent less energy than new ore. Virtually every material recycled uses less energy than using virgin materials. How much energy is this? Using and discarding just two aluminum cans in one day uses more energy than is used daily by each of a billion people in less developed countries. The average saving, however, does not include added energy costs of collection and transportation. "