A camera slider is an accessory that can really make a shot. But when your business is photography rather than building camera accessories, quick-and-dirty solutions often have to suffice. Thus the genesis of this camera slider controller.
The photographer in question in [Paulo Renato], and while his passion may be photography, he seems to have a flair for motorized dollies and sliders. This controller is a variable-speed, reversible, PIC-based design that drives an eBay gearmotor. The circuit lives on a scrap of perfboard, and it along with batteries and a buck converter are stuffed into the case-modded remains of an old KVM switch. Push buttons salvaged from another bit of e-waste act as limit switches, and a little code provides the magic. We like the hacked nature of the controller, but we wonder about the wisdom of using the former KVM’s USB ports to connect the controller to the drivetrain; it’s all fun and games until you plug a real USB device into it. In sum, though, a nice build with nice results. Check out his other videos for more on the mechanicals.
There was a time in the late 80s and early 90s where the Amiga was the standard for computer graphics. Remember SeaQuest? That was an Amiga. The intro to Better Call Saul? That’s purposefully crappy, to look like it came out of an Amiga. When it comes to the Amiga and video, the first thing that comes to mind is the Video Toaster, hardware and software that turns an Amiga 2000 into a nonlinear video editing suite. Digital graphics, images, and video on the Amiga was so much more than the Video Toaster, and at this year’s Vintage Computer Festival East, [Bill] and [Anthony] demonstrated what else the Amiga could do.
Wherever you stand on the topics of road safety and vehicle speed limits it’s probably fair to say that speed cameras are not a universally popular sight on our roads. If you want a heated argument in the pub, throw that one into the mix.
But what if you live in a suburban street used as a so-called “rat run” through route, with drivers regularly flouting the speed limit by a significant margin. Suddenly the issue becomes one of personal safety, and all those arguments from the pub mean very little.
The theory of operation is straightforward, the software tracks moving objects along the road in the camera’s field of view, times their traversal, and calculates the resulting speed. The area of the image containing the road is defined by a bounding box, to stop spurious readings from birds or neighbours straying into view.
All that has now changed though with this board. It features the Grid-EYE sensor itself, an Atmel ATSAM-D21G18A microcontroller, and onboard Bluetooth, but has an interesting feature that, as well as being a standalone device, can be used as an Arduino shield. A full range of APIs are provided, and the code is BSD licensed.
This module is not the highest-spec thermal imaging camera on the market by any means, after all it has a resolution of only 64 pixels in an 8×8 grid. But its affordability and easy availability should trigger a fresh crop of thermal camera projects in our community, and we applaud that.
This build started with a Canon Ixus 5 camera running CHDK (the Canon Hack Development Kit) to lock the settings down. This points at the film strip through a macro lens so each frame of the strip fills the frame. An Arduino then triggers the camera to take a photo using a USB cable. The same Arduino also controls a motor that winds the film and triggers the film gate from the camera that he salvaged. By reversing the function and triggering it with a servo motor, he can easily blank off the edges of the frame so no stray light shining through the film material causes any problems. Once the camera has captured every frame on the strip, he feeds the captured images into Blender, which processes them and spits out the final movie.
This is a very impressive build overall. [Heikki] has obviously put a lot of thought into it, and the whole thing looks like it runs very efficiently and quickly. The captured video looks great, as you can see from this sample. The decision to use a salvaged film gate was a smart one: there is no point in reinventing the wheel if engineers of previous generations have solved the problem. Kudos to [Heikki] for also documenting the process in a lot of detail: he has produced a 5-part series on his blog that shows how and why he made the decisions he did. This series goes over the overall view of the project, using CHDK to control the camera, 3D printing parts, wiring the Arduino and writing the code that controls the system.
If you are a lover of the aesthetic of vintage photography and Instagram’s filters don’t quite cut it for you, then there are plenty of opportunities even in this post-film age to sample the real thing. Plastic lens cameras from the former Soviet Bloc countries or the Pacific rim are still in production, and you can still buy 35mm and 120 roll film to put in them.
You can even still buy 8mm film for your vintage movie camera, but it’s rather pricey. [Claire Wright] is a young film maker who had an old 8mm camera and really wanted that analog film feel to her work, and she and her father solved this problem by using the 8mm camera’s lens in front of a Raspberry Pi camera sensor. Since an 8mm film frame is 4.5mm x 3.3mm and the Pi camera sensor size is 3.76mm x 2.74mm, it’s quite a good fit.
Their first prototype had a custom case which concealed the Pi camera behind the lens on rails taken from an old CD-ROM drive, and had an HDMI screen on top and a pistol grip to make it portable. An external thumb screw allowed the camera to be positioned in the focal plane.