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New Disposable Digital Cameras with LCDs
del_ctrl_alt writes "Pure Digital Technologies are set to introduce the world's first ever disposable digital camera [ed. note: see below], retailing in the USA for $19.99. Ritz, CVS, Disney World and Longs Drugs are all going to stock the 2-megapixel camera, which somewhat amazingly has a color preview screen and allows you to delete images before you take it to the store for processing (where you will receive a free picture CD along with your prints)." It's not the first disposable digital camera, which was hacked shortly afterwards, but these include a LCD display (they're made by the same company which made the first ones). Have fun!
Controller
SMaL Camera Technologies
Numbering on controller chip:
AIC0021B
02TWN5103
C68051.00
Memory
16M x8 NAND Flash memory: Samsung K9F2808UO8-YCB0
4Mx16 SDRAM: Micron Technologies MT48LC4M16A2TG-75E
Preliminary stuff of interest
The edge connector of the PV2 electrically matches that of the classic Dakota, at least as far as the USB pins go; whatever cable/contraption used to access the classic should work for this one without modifications.
Holding down ALL the buttons at once (shutter, Display, Delete) while turning on power will display a diagnostic screen showing the camera's serial number, firmware revision and similar information.
See John's Dakota page with an update for the PV2, including some USB info, datasheets for the more interesting parts (including the LCD) and a gallery of good dissection photos.
USB info
Here is the dump-out from SUCR commandline, walking thru the device properties. (All versions of SUCR do this, in case the manufacturer decided to get clever and move the devices/interfaces/endpoints/altsettings around). This gives a good idea of the 'organization' of the camera's USB interface.
usb_set_debug: Setting debugging level to 3 (on) LIBUSB_DLL: usb_os_init: dll version: 0.1.8.0 LIBUSB_DLL: usb_os_init: driver version: 0.1.8.0 LIBUSB_DLL: usb_os_find_busses: found bus-0 LIBUSB_DLL: usb_os_find_devices: found \\.\libusb0-0003--0x058f-0x9254 on bus-0 LIBUSB_DLL: usb_os_find_devices: found \\.\libusb0-0004--0x0dca-0x0027 on bus-0 Looking at device with USB id 058F/9254 Looking at device with USB id 0DCA/0027 Found camera... This device has 2 possible configuration(s). Looking at configuration 0...This configuration has 1 interfaces. Looking at interface 0...This interface has 1 altsettings. Looking at altsetting 0...This altsetting has 2 endpoints. Endpoint 0: Address 81h, attributes 02h (Bulk) (In) Endpoint 1: Address 01h, attributes 02h (Bulk) (Out) Looking at configuration 1...This configuration has 1 interfaces. Looking at interface 0...This interface has 1 altsettings. Looking at altsetting 0...This altsetting has 2 endpoints. Endpoint 0: Address 81h, attributes 02h (Bulk) (In) Endpoint 1: Address 01h, attributes 02h (Bulk) (Out) Set config: 0 Found bulk endpoint 129 on Configuration 1 Interface 0 Altsetting 0 Set alt. interface: 0 [...]
The camera has 2 configurations, one is for 200mA and the other is for 100mA, but "seem" otherwise identical. (See the testlibUSB dump-out below for additional details.) When the configuration is set by SUCR, the camera emits a 2-tone ascending beep, and the LED comes on. However, regardless of which of the configurations is used, all control transfers produce a CRC error message from Windows: LIBUSB_DLL error: error sending control message: win error: Data error (cyclic redundancy check).
Here is the output from testlibUSB: DLL version: 0.1.8.0 Driver version: 0.1.8.0 bus/device idVendor/idProduct bus-0/\\.\libusb0-0002--0x0dca-0x0027 0DCA/0027 - Manufacturer : SMaL - Product : Digital Camera wTotalLength: 32 bNumInterfaces: 1 bConfigurationValue: 1 iConfiguration: 3 bmAttributes: 80h MaxPower: 100 bInterfaceNumber: 0 bAlternateSetting: 0 bNumEndpoints: 2 bInterfaceClass: 255 bInterfaceSubClass: 0 bInterfaceProtocol: 0 iInterface: 0 bEndpointAddress: 81h bmAttributes: 02h wMaxPacketSize: 64 bInterval: 0 bRefresh: 0 bSynchAddress: 0 bEndpointAddress: 01h bmAttributes: 02h wMaxPacketSize: 64 bInterval: 0 bRefresh: 0 bSynchAddress: 0 wTotalLength: 32 bNumInterfaces: 1 bConfigurationValue: 2 iConfiguration: 3 bmAttributes: 80h MaxPower: 50 bInterfaceNumber: 0 bAlternateSetting: 0 bNumEndpoints: 2 bInterfaceClass: 255 bInterfaceSubClass: 0 bInterfaceProtocol: 0 iInterface: 0 bEndpointAddress: 81h bmAttributes: 02h wMaxPacketSize: 64 bInterval: 0 bRefresh: 0 bSynchAddress: 0 bEndpointAddress: 01h bmAttributes: 02h wMaxPacketSize: 64 bInterval: 0 bRefresh: 0 bSynchAddress: 0
Some dissection pictures
Back of the PV2. The case is held together by 3 screw
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It's an interface similar to the old Palm III cradles. It's hidden behind a removable plastic tab on the side. For my hack, I used a piece of a Centronics cable connector attached to a USB cable. Google for "dakota camera hack" and you will find the details.
Of course, in this case Disposable == Recyclable. Or do you really think they simply pitch the 2 megapixel CCD sensor, LCD display, internal memory, camera body, etc. in the garbage after you bring it in?
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I did the original hack on the old camera, and, of course, I'm working on the new one... here's my web page on it.
The next step is a ROM dump -- then we can see if there is any code in the flash memory, or if it's stored on the ASIC. I suspect that there is a bootloader on the ASIC and the bulk of the code (certainly the pre-programmed images) is on the flash. Don't know if it's encrypted or scrambled yet.
We're still working on the resolution of the sensor. I read the part number last night, but didn't return any google hits. We can't really rely on the size of the pictures one would get back from processing because, in the past, they've upscaled it.
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Don't expect it to look better than the 1.2 Megapixel camera it really is.
"Disposable" is quite a bit of a misnomer here. A more descriptive term might be "open-term rental".
You "buy" the camera from your shop, carry it around for as long as you want, take some pictures with it, then you return to the shop to hand the camera in and get the pictures on it developed. The shop doesn't crack open the camera like a walnut shell and toss it in the trash -- after extracting your pictures from it, it's refurbished and re-"sold" to the next person.
These aren't contributing to landfills any more than any other digital camera -- they only get disposed of when they've been damaged so badly that they cannot be repaired.