Eclectic junk from the four corners of the ‘Net. And pictures too!
This looks to be a handy tool. You enter the body diameter, the rocket weight, drag coefficient, and the motor type and you get an estimation of how high it will go and even how long it will take to land if you add the parachute size. You can use it for other things too, like seeing if you could launch a full roll of paper towels into the air. You can, it takes about 3 D-12 motors. 🙂
It all started on a long plane flight in the beginning of 2006. I was doodling in my Moleskine notebook and musing about pinhole cameras when and idea struck me. What if I made a camera that was panoramic and high capacity at the same time. I had been shooting with my 6×9 medium format pinhole (120 film) for a few weeks and was happy with the images but wished I could get more than eight shots a roll and have a wider field of view.
What I thought was if I moved the pinhole closer to the film plane and rotated to aspect 90 degrees I could get dozens of images on a single roll of film and still get a pretty good sized negative. Turns out I can get about 30 images on a roll and even a quickly made pinhole will produce a satisfactory sharpness.
Check out my build notes of this fun and rewarding project.
Simple and not so simple mechanical toys from the engineers at Hitachi. The designs are quite clear and should tickle your brain to come up with ones of your own. The ‘south’ pointing car is a classic design that could have some use as a maze solving robot, or at least one that keep track of what was was south when it started.
[via MAKE fourm]
Who says you need to buy a Nikon or a Canon or even a Minolta to own an SLR when you have cardboard and paste handy? Sure, it may lack a few creature comforts like shutter speeds faster than bulb or a F stops on the lens, but you don’t need those to take a nice photograph. I like the orange curved lever that is used to pull up the mirror before you open the shutter, very clever.
Uêba – Cardboard Reflex Camera
Combine thermal reactive glass with shower tiles and you get a beautiful interactive hygienic experience.
[via Ektopia]
A device like this is so amazingly handy to have in your photo bag. With a few of these attached to a few flashes salvaged from disposable cameras you can totally light up whatever your photographing. I think I’ll try that and see what sort of effects I can get with this. I’m thinking four plus point lighting on a sub shoe string budget can be achieved with this.
This is a project to make a Slave Trigger for an electronic strobe unit. The Slave Trigger is plugged into the sync cord (PC Type) from a strobe unit and will flash the strobe when it "sees" another flash go off. An older 1970’s Epoxy cased slave trigger (AC Plug Style) was used as a guide in developing this new version. Thanks to input from some of my web friends we now use a photocell from a $1 solar powered calculator as the photo diode. This Project uses a SCR, Capacitor, Resistor, Photo Cell, an Radio Shack Adaptor Plug, and a small plastic box. The parts were found at a local electronic surplus store and the Dollar Store.