On April 1st the Magic Lantern team announced a proof of concept that lets you run Linux on a Canon EOS camera. Because of the date of the post we’ve poured over this one and are confident it’s no joke. The development has huge potential.
The hack was facilitated by a recent discovery that the LCD screen on the camera can be accessed from the bootloader. In case you don’t recognize the name, Magic Lantern is an Open Source project that adds features to these high-end cameras by utilizing the bootloader with binary files on the SD card. It’s long been a way of hacking more features in but has always been complicated by the fact that you must figure out how to play nicely with the existing firmware. Commanding the LCD was the last part of the hardware that had previously not been driven directly from Magic Lantern.
Now that the Linux kernel is in the picture, ground-up features can be built without dealing with the stock firmware in any way (and without overwriting it). We’re excited to see where this one goes. Currently it’s just a proof that you can boot Linux, it’s not actually functional yet. Here’s your chance to polish those kernel porting skills you’ve been holding in reserve.
Most of the incredible flight simulator enthusiasts with 737 cockpits in their garage are from the US. What happens when they’re from Slovenia? They built an A320 cockpit. The majority of the build comes from an old Cyprus Airways aircraft, with most of the work being wiring up the switches, lights, and figuring out how to display the simulated world out of the cockpit.
Google Cardboard is the $4 answer to the Oculus Rift – a cardboard box and smartphone you strap to your head. [Frooxius] missed being able to interact with objects in these 3D virtual worlds, so he came up with this thing. He adapted a symbol tracking library for AR, and is now able to hold an object in his hands while looking at a virtual object in 3D.
Heat your house with candles! Yes, it’s the latest Indiegogo campaign that can be debunked with 7th grade math. This “igloo for candles” will heat a room up by 2 or 3 degrees, or a little bit less than a person with an average metabolism will.
Last week, we saw a post that gave the Samsung NX300 the ability to lock the pictures taken by the camera with public key cryptography. [g3gg0] wrote in to tell us he did the same thing with a Canon EOS camera.
The guys at Flite Test put up a video that should be handy for RC enthusiasts and BattleBot contenders alike. They’re tricking out transmitters, putting push buttons where toggle switches should go, on/off switches where pots should go, and generally making a transmitter more useful. It’s also a useful repair guide.
[Frank Zhao] made a mineral oil aquarium and put a computer in it. i7, GTX 970, 16GB RAM, and a 480GB SSD. It’s a little bigger than most of the other aquarium computers we’ve seen thanks to the microATX mobo, and of course there are NeoPixels and a bubbly treasure chest.
[Eugene] wanted to use his vintage Leica M4 as a digital camera, and he had a Canon EOS 350D digital camera sitting around unused. So he Frankensteined them together and added a digital back to the Leica’s optical frontend.
It sounds simple, right? All you’d need to do is chop off the back from the EOS 350D, grind the digital sensor unit down to fit into exactly the right spot on the film plane, glue it onto an extra Leica M4 back door, and you’re set. Just a little bit of extremely precise hackery. But it’s not even that simple.
Along the way [Eugene] reverse-engineered the EOS 350D’s shutter and mirror box signals (using a Salae Logic probe), and then replicated these signals when the Leica shutter was tripped by wedging an Arduino MiniPro into an old Leica motor-winder case. The Arduino listens for the Leica’s bulb-flash signal to tell when the camera fires, and then sends along the right codes to the EOS back. Sweet.
There are still a few outstanding details. The shutter speed is limited by the latency in getting the signal from the Leica to the 350D back, so he’s stuck at shutter speeds longer than 1/8th of a second. Additionally, the Canon’s anti-IR filter didn’t fit, but he has a new one ordered. These quibbles aside, it’s a beautiful hack so far.
What makes a beautiful piece of work even more beautiful? Sharing the source code and schematics. They’re both available at his Github.
Of course, if you don’t mind completely gutting the camera, you could always convert your old Leica into a point and shoot.
Loading point and shoot digital cameras is old hat around here, but [Alex] and [Andreas] are taking it to the next level. They’ve made a Bluetooth controller for a cheap Canon camera, allowing pictures to be taken with an iPhone or Android device.
The camera in question is a Canon IXUS70, although any camera supported by CHDK will work. We’ve seen a few builds using this firmware to take pictures of the sunrise every day and transmitting images over a radio link, but this build is far more interactive.
The camera is connected to an Arduino and Bluetooth shield with a hacked up USB cable. The ‘duino communicates with a phone using a JQuery app, giving any phone with a Bluetooth module control of the camera’s zoom and shutter.
All the code is available on the github, with a very good video demonstration of the build available below.
Continue reading “Controlling a Point and Shoot With Bluetooth”
[Andy] wanted to take a few at sunrise, but waking up before sunrise has obvious problems associated with it. Instead, he built a device that calculates the local sunrise time, snaps a picture, and goes to sleep until the next morning.
The camera used for the project was an old Canon point and shoot, chosen for the ability to load CHDK firmware. Other electronics included an Arduino pro mini, a LiPo battery and charger board, real time clock, and an old Nokia LCD for the user interface.
There’s quite a bit of code that goes into figuring out when the sun will rise each day, but once that’s figured out, all [Andy] has to do is take the camera somewhere pretty, point it East, and record a few days worth of sunrises. When put into a ‘game camera’ enclosure, its rugged enough to stand up to everything except a thief, and has enough battery power for a few weeks worth of sunrises.
Video demonstrating the local sunrise time below.
Continue reading “Enjoying The Sunrise Every Single Day”
It has been far too long since we’ve seen an installment of Retrotechtacular, and this is a great one to start back with. It’s always a treat to get the story from the horse’s mouth. How about the tale of the world’s first Digital Single-Lens Reflex camera? [Jame McGarvey] shared the story of how he developed the device in 1987.
That’s it shown above. It’s not surprising to see that the only real modification to the camera itself is the back cover. The difference between an SLR and a DSLR is really just the D, which was accomplished by adding a CCD in place of the film.
The entire story is a treat, but there are a couple of nuggets the we enjoyed most. The possibly-clandestine purpose of this device is intriguing. It was specifically designed to pass as a film camera which explains the ribbon cable connecting the CCD module to the control box which would be stored in a camera bag. It is also delightful to hear that the customer who tasked Eastman Kodak with developing the system preferred Canon camera bodies. So this Kodak DSLR indeed used a Canon F-1 body.
Once you get done looking this one over you will also enjoy learning how a CCD actually works.
Retrotechtacular is a weekly column featuring hacks, technology, and kitsch from ages of yore. Help keep it fresh by sending in your ideas for future installments.
Let’s go back in time to the 1980’s, when shoulder pads were in vogue and the flux capacitor was first invented. New apartment housing was being built in [Vince’s] neighborhood, and he wanted some time-lapse footage of the construction. He had recently inherited an Elmo Super-8mm film camera that featured a remote control port and a speed selector. [Vince] figured he might be able to build his own intervalometer get some time-lapse footage of the construction. He was right.
An intervalometer is a device which counts intervals of time. These are commonly used in photography for taking time-lapse photos. You can configure the intervalometer to take a photo every few seconds, minutes, hours, etc. This photographic technique is great when you want see changes in a process that would normally be very subtle to the human eye. In this case, construction.
[Vince] started out by building his own remote control switch for the camera. A simple paddle-style momentary micro switch worked perfectly. After configuring the camera speed setting to “1”, he found that by pressing the remote button he could capture one single frame. Now all he needed was a way to press the button automatically every so often.
Being mechanically minded, [Vince] opted to build a mechanical solution rather than an electronic circuit. He first purchased a grandfather clock mechanism that had the biggest motor he could find. He then purchased a flange that allowed him to mount a custom-made wooden disk to the end of the minute hand’s axle. This resulted in a wheel that would spin exactly once per hour.
He then screwed 15 wood screws around the edge of the wheel, placed exactly 24 degrees apart. The custom paddle switch and motor assembly were mounted to each other in such a way that the wood screws would press the micro switch as they went by. The end result was a device that would automatically press the micro switch 15 times per hour. Continue reading “1980’s Ingenuity Yields Mechanical Intervalometer”