Raspberry Pi LED display board
Jeroen Domburg, known online as "Sprite," was given a very interesting piece of hardware to bring back to life: a dual-color 224x48 LED display board that had previously been used to display information for some kind of transportation system. In a rare occurrence, he was also given all the necessary power supplies and the industrial computer to drive it.
Right in the middle of Jeroen's project documentation you'll get a glimpse into the art of computer hacking. The computer boots up, gives him the hardware specs, then goes to a blank screen. His task was to find out how to get access to this computer and gain full control over the network in a few minutes using publicly available tools.
Once he had the display working like it was originally intended, he had to take it a step further. This is where the Raspberry Pi comes in. With its power, network access, and gpio pins, it was a perfect fit to drive the display. Jeroen loaded a linux distrubution and video client on the board and got the results you see above. Note that the flickering is due to the refresh rate of the screen and the refresh rate of the camera overlapping -- it doesn't have this issue with the naked eye.
I suspect it is limited. Any time you move to quantity, you end up designing a specific system for your need. It is more cost effective. I can't imagine multi thousand scale runs of a product with the Raspberry Pi crammed inside.
@selinz See my comment in this thread. I emailed Judd, and he replied that the system isn't working. Maybe the barrage of emails was so massive that the owner had to shut it off temporarily, for Judd to recover.
i would like to invite you and your owner to present at DESIGN West 2014 in San Jose March 31-April 3. Our attendees would love a talk on using Python to program the Raspberry Pi and the snack feature would be a great demo. K
This is cute on its surface. But I love dogs and -- not to sound like an extremist -- I think it is, perhaps, a bit cruel to tie treats to emails. First, if he gets none, the dog would feel punished for no reason. Second, if he gets too many, the dog would grow obese because dogs instinctively eat and eat when food is available.
However, I have a modest proposal to offer as alternative: perhaps the clever inventor would want to tie his own diet to the delivery of emails? No emails, no dinner.
Not to end on a total downnote, I'll share a story about my pup. Our neighbors in the redwood forest include a family of ravens. Ravens and dogs have a relationship going back tens of thousands of years, and dogs can understand ravens when they talk (Ravens have about 30 "words," ranging from "hungry" to "danger" to "dinner time.") I've come to recognize some of the sounds myself, which is helpful for avoiding coyotes or other predators.
In a movie on a DVD last night, a sound effect had ravens making their "Danger!" call, and my dog promptly ran out of the house and began barking to warn others. He settled down only after we convinced him it was only a movie.
@kfield, Awww. Poor dog. Pavlov would be proud. I wonder if we're the subjects of this Pavlovian experiment, though. Speaking of, NobelPrize.org has a Pavlov's dog video game to play while you wait for the Judd's owner to upgrade his webcam.
I emailed Judd the dog today, who was featured in Slide 9of this slideshow - a device his owner built that gives the dog a treat everytime someone emails the dog. This is the text in the email I received from Judd, and photo:
"Terrible News! The USB webcam is not working reliably anymore. I am going to ask my owner to upgrade to the new Raspberry Pi Camera! Woof Woof! Maybe the attached photo will convince him? "
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments