I’m sure you’ve already heard about C.H.I.P, the $9 Linux computer. It is certainly sexy to say nine-bucks but there should really be an asterisk next to that number. If you want things like VGA or HDMI you need an adapter board which adds cost (natively the board only supports composite video output). I also have questions about MSRP once the Kickstarter is fulfilled. But what’s on my mind isn’t cost; this is still going to be in the realm of extremely-inexpensive no matter what shakes out. Instead, I’d like to look at this being the delivery device for wider Linux acceptance.
The gist of the hardware is a small board with a SoC boasting a 1GHz clock, half a gig of ram, four gigs of flash, one USB, WiFi and Bluetooth. It also has add-ons that make it a handheld and is being promoted as a gaming console. It’s amazing what you get out of these SoC’s for the cost these days, isn’t it?
For at least a decade people have claimed that this is the year of the Linux desktop. That’s not the right way to think. Adults are brand-loyal and business will stick to things that just work. Trying to convert those two examples is a sisyphean effort. But C.H.I.P. is picking up on a movement that started with Raspberry Pi.
These are entry-level computers and a large portion of the user-base will be kids. I haven’t had a hands-on with this new board, but the marketing certainly makes an effort to show how familiar the GUI will be. This is selling Linux and popular packages like LibreOffice without even tell people they’ll be adopting Linux. If the youngest Raspberry Pi users are maturing into their adolescence with C.H.I.P, what will their early adult years look like? At the least, they will not have an ingrained disposition against Open Source Software (unless experiences with Rasbperry Pi, C.H.I.P., and others is negative). At best they’ll fully embrace FOSS, becoming the next generation of code contributors and concept evangelists. Then every year will be the year of the Linux desktop.
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.
The BeagleBone Black has a powerful featureset: decent clock speed, analog inputs, multiple UART, SPI and I2C channels and on-board memory, to name a few. One missing feature seems to be the lack of support for the two on-board Programmable Real-time Units (PRU’s). Each of these 32-bit processors run independently of the main processor, but are able to interface with the main processor through the use of shared RAM and some interrupts. Unfortunately, PRU’s are not supported and in the absence of information, difficult to program. Enabling the PRU’s will allow them direct access to external sensors via the GPIO pins, for example. Perhaps most enticing is the idea that the PRU’s add real-time processing capability to the BBB.
[Thomas Freiherr] is working on the libpruio project to allow PRU support on the BBB. It is “designed for easy configuration and data handling at high speed. libpruio software runs on the host (ARM) and in parallel on a Programmable Realtime Unit SubSystem (= PRUSS or just PRU) and controls the subsystems”. Additional information about the project is available on the libpruio wiki, and files can be downloaded from here (German Page).
This paper presented at inter.noise2014 (PDF) a couple of months ago has a nice comparison of various small computer/controller boards and outlines the advantages of the BBB once its PRUs are enabled. If readers come across applications of the BBB with PRUs enabled, let us know in the comments. If you want to work your way into the world of the PRU we highly recommend this tutorial series.
Thanks for sending in the tip, [Patrick]
[Image Source: libpruio stepper motor example]
Transcend markets their DrivePro 200 camera for use as a car dashcam. We’re a bit surprised at the quality and apparent feature set for something relegated to a rather mundane task as this. But [Gadget Addict] poked around and found a nice little nugget: you can live stream the video via WiFi; the framerate, quality, and low-lag are pretty impressive. In addition to that, the next hack is just waiting for you to unlock it.
As it stands right now you turn on the camera’s built-in WiFi AP, telnet into two different ports on the device (sending it into smartphone connected mode) and you’ll be able to live stream the view to your computer using RTSP. Great, that in itself is a good hack and we’re sure that before long someone will figure out an automatic way to trigger this. [GA] also found out how to get the thing into script mode at power-on. He hasn’t actually executed any code… that’s where you come in. If you have one of these pull it out and get hacking! It’s a matter put putting files on the SD storage and rebooting. Crafting this file to enable shell access would open up an entire world of hacks, from things like time-lapse and motion sensing to special processing and filtering in real time. We think there’s huge potential so keep us up-to-date as you find new ways to pwn this hardware.
Continue reading “Transcend DrivePro 200 Hack to Stream and Script; Begs for More”
So you want to play some retro games on your BeagleBone, just load up Linux and start your favorite emulator right? Not if you’re serious about it. [Andrew Henderson] started down this path with the BeagleBoard-xM (predecessor of the BeagleBone Black) and discovered that the performance with Snes9X wasn’t quite what he had in mind. He got the itch and created a full-blown distro called BeagleSNES which includes bootloader and kernel hacks for better peformance, a custom GUI, and is in the process of developing hardware for the embedded gaming rig. Check out the documentation that goes along with the project (PDF); it’s a blueprint for how open source project guides should be presented!
The hardware he’s currently working on is a Cape (what add-on boards for the BBB are called) that adds connectors for original Nintendo and Super Nintendo controllers. It also includes an RTC which will stand in for the real-time clock features included in some cartridges (Pokemon Yellow). Also in the works is a 3D printed enclosure which would turn it into a portable, something like this other BBB portable hack.
Check out a demo of what BeagleSNES can do in the video after the break.
Continue reading “Passion Project Turns BeagleBone into Standalone Super NES”
A few months ago, the Intel Edison launched with the promise of putting a complete x86 system on a board the size of an SD card. This inevitably led to comparisons of other, ARM-based single board computers and the fact that the Edison doesn’t have a video output, Ethernet, or GPIO pins on a 0.100″ grid. Ethernet and easy breakout is another matter entirely but [Lutz] did manage to give the Edison a proper display, allowing him to run Doom at about the same speed as a 486 did back in the day.
The hardware used for the build is an Edison, an Arduino breakout board, Adafruit display, speaker, and PS4 controller. By far the hardest part of this build was writing a display driver for the Edison. The starting point for this was Adafruit’s guide for the display, but the pin mapping of the Edison proved troublesome. Ideally, the display should be sent 16 bits at a time, but only eight bits are exposed on the breakout board. Not that it mattered; the Edison doesn’t have 16 pins in a single 32-bit memory register anyway. The solution of writing eight bits at a time to the display means Doom runs at about 15 frames per second. Not great, but more than enough to be playable.
For sound, [Lutz] used PWM running at 100kHz. It works, and with a tiny speaker it’s good enough. Control is through Bluetooth with a PS4 controller, and the setup worked as it should. The end result is more of a proof of concept, but it’s fairly easy to see how the Edison can be used as a complete system with video, sound, and wireless networking. It’s not great, but if you want high performance, you probably won’t be picking a board the size of an SD card.
Video demo below.
Continue reading “Running Doom On The Intel Edison”
It should come as no surprise that we at Hackaday love Linux above all others (that should start a nice little flamewar on the internal email list). If you still haven’t given it a whirl yet, don’t fear. Everyone starts from scratch at some point. With each passing year it becomes more and more likely that knowing something about Linux will eventually benefit every hardware hacker. Take part of your time off in the coming weeks to give it a whirl. First thing’s first, check out this quick guide on what Linux actually is.
Adafruit’s offering is pretty low level, so if you’re the kind that likes to argue “kernel” versus “OS” please keep it to yourself. For us the important distinction pointed out here is microcontroller (Arduino) versus Raspberry Pi. The Pi generally runs one flavor or another of Linux for good reasons, while microcontroller-driven systems tend to run use-specific code (with the exception of projects that leverage Real Time Operating Systems). Of course it extends past pre-fab options, Linux is a popular choice on bare-bones roll-your-own machines.
This is the year of Linux! Ha, we’ve heard that one every year for at least a decade. To us it makes no difference, you should know a bit about each OS out there. What are you waiting for? Read the guide then download (for free!) a CD image of our current favorite Linux flavor.