Build A Google-style Panorama Rig For $300

PhotoTrail

As part of a “disruptive technologies” course at the United States Military Academy, [Roy D. Ragsdale] produced a working prototype of a Google Street View-like system called PhotoTrail. Like its corporate-backed inspiration, the system captures georeferenced 360-degree panoramas that can be viewed interactively in a web browser…but at a hardware cost of only around $300. [Ragsdale’s] prototype is based entirely on consumer-grade off-the-shelf components and open source software, all tied together by the yin and yang of DIY: foam core board and a few Python scripts.

This article from IEEE Spectrum magazine provides some background on the selection of parts and construction of the system, including a hardware shopping list and a list of links to all of the open source packages used.

The PhotoTrail prototype is surprisingly small and lightweight. A vehicle isn’t even required; the camera array can be carried overhead by a single person, making it possible to capture remote locations. But [Roy] expects future revisions to be even smaller and less obtrusive, perhaps mounted to a headband. Mount Everest awaits!

Touchscreen Picture Frame

touchscreen_picture_frame

Circuit Ideas Design has posted a digital picture frame project based on their 240×320 16-bit color QVGA display. We made our own digital frame from a smaller screen a while back and this is pretty much the same implementation except with a larger screen and built around the AVR family of microcontrollers rather than PIC controllers.

The thing that piqued our curiosity was the five icons silk screened on one end of the display. That’s right, this is a touch screen. The board also has a built in SD slot and a bit of flexibility for connecting to a microcontroller. It can be controlled from a 40-pin header, or from headers that are designed to work as an Arduino shield. We’d love to get our hands on one but we were unable to figure out what currency the list price was in. Has anyone used this board yet?

Vintage Hack – Game Boy Camera

Screenshot

Back in 2005, a member of a French robotics team named [Laurent] wrote a wonderful how-to that we somehow missed on using the Game Boy Camera as a vision device for a robot. The images above are actual shots from his project. The Game Boy Camera features a stunning 128×123 pixel resolution in a gorgeous 4 color gray-scale palette. Possibly the most attractive feature of this hack is that it is still possible to get a hold of these cameras for under ten dollars on ebay.

He connected the camera sensor to an Atmel AT90S4433 using a combination of digital and analog signals, and then used the microcontroller to echo the data back to his PC. His write up includes schematics for wiring up the sensor/microcontroller, the datasheet for the sensor, his C code for the whole project, and an easy to read pin out of the GBC connector. Although his project simply offloaded the image to a computer, it would be entirely possible to have the microcontroller respond to the image or simply just log and store it. It would also be just as easy to replace his Atmel chip with your own favorite microcontroller, as long as it has a couple Digital I/O ports and at least one Analog port (or an external analog to digital converter).

UPDATE: Good catch r4v5, it would require an ADC, not a DAC.

Timelapse Dolly

[vimeo = http://www.vimeo.com/3150715%5D

[Andrew Curtis] does fantastic timelapse photography. He found that he wanted to be able to move the camera while taking the shots to give motion to the final product. While this isn’t exactly a new idea, not too many people mess with it. The dolly to do it with can be quite expensive as it has to support the camera and move it in an automated and controlled fashion. [Andrew] has been working on building his own dolly and has documented the process.

[via Flickr]

Pictures From Space For $150

prelaunch

Ever wanted to be able to launch a balloon into space, track its location via GPS, take some photographs of the curvature of the earth, and recover the balloon, all for the low low cost of $150? [Oliver Yeh] sent in his teams project, Icarus, which does just that. The group of MIT students found that they could use a weather balloon filled with helium to reach heights of around 20 miles above the earth;  their particular balloon achieved 93,000 feet (17.5 miles). Then, utilizing only off the shelf components with no soldering, conjured up a GPS tracker using a Motorola i290 Prepaid Cellphone. They then used a Canon A470 loaded with the chdk open source firmware to take pictures. After seeing the results of their launch, the team hopes that this could rejuvenate interests in science and the arts.

Time Lapse Light Sculptures

time_lapse_light_sculptures

[Jared] sent us a feature he posted involving time-lapse photography and an LED. Using a custom built aparatus an LED is moved on two axis’ during a long exposure of around thirty seconds. The frame is wood and PVC with two gearhead motors powered by AA batteries to provide the locomotion. The LED is powered by a 3v button cell and automatically transitions through different colors.

Digital Camera LCD Replacement

digital_camera_lcd_replacement

Turning on your camera to this kind of black blotch will ruin your day. Cracked LCD screens have got to be the biggest digital camera killer out there. Although you can still take pictures with it, a non-functioning screen makes it difficult if not impossible to change settings and take decent photos.

[myles_h] has document the process of replacing a broken screen in his digital camera. As professional repair usually costs more than a brand new camera you’ll want to do this yourself. New screens can be purchased online, but we’ve also considered buying the same model of camera from ebay (screen intact but broken in a different way). This model, a Sony Cybershot DSC-W50, has fairly easy access to the LCD and its connection to the logic board. Before buying parts, you may want to investigate how much disassembly your camera will require.