RepRap has released a new driver board for their stepper motors. They’ve honed the design to be easier to assemble and cheaper. We’re sure all of that is wonderful, but what really got our attention was the video. In the video, which you can see after the break, they run a test file through it to make it “sing” happy birthday. Is this something that everybody does and we’re just now catching on? Why all the musical stepper motors today?
[vimeo=3952932]
[Tempt One] is a graffiti artist who has Lou Gehrig’s disease. He can no longer physically produce art, since his disease has taken his ability to control his arms. His friends, won’t let that be the end of it though. They’re building a visual tracking system to let him work by moving his eye. It seems like it would be very difficult to get any kind of a smooth curve out of eye movement, but the short demonstration video, which you can see after the break, does a decent job, at least for something this early in development. The source code isn’t released yet, but they do plan to do so. If you wanted to make your own, you could find some info in a past post of ours. We’re guessing they intend to use it with something along the lines of the laser tagging system.
Dear Hack a Day,
Websites keep publishing poorly executed jokes today; how can I fix this?
We’ve been getting a lot of questions on the tip line like the one above, so we put together this one-step illustrated how-to. If you’re not the physical labor type, you can use [Steve Lambert]’s SelfControl.
[Related: Hack a Day goes autonomous, Craft a Day]
The massive hacker camp Hacking at Random 2009 has extended their early bird ticket sales until April 14th. At EUR150, they’ve already managed to sell 1000 tickets. Every two years the european hacker community gathers together to hold a multiday camp that covers topics from hacking to art and politics. 2007’s CCCamp was largely the inspiration for this year’s ToorCamp. HAR2009 is looking for people to submit presentations, workshops, and lectures as well. They’re looking for entries that are very technology focused. The call for papers deadline is May 1st. The team is hosting a field day April 18th to tour the grounds with the various hacker villages that will be setting up. The main even is August 13-16 near Vierhouten, Netherlands.
Fundamental Logic is selling a Bus Pirate kit and bare PCB based on our universal serial interface tool. They started with our serial port-based v1a hardware, and modified it to use all through-hole parts. 8pin DIP LP2951ACN/-3.3 switchable voltage regulators replace the surface mount TPS79650/33 that we used. The PIC is pre-programmed with our latest firmware, version 0f, which includes a bootloader for easy firmware updates through the serial port. Documentation includes illustrated assembly instructions.
Speaking of Bus Pirate goodness, we’re busy working on hardware V2. As astute readers may have already noticed, the final version of the Bus Pirate incorporates an FTDI USB->serial chip, and draws its power from the USB port. We also tackled the software-controlled pull-up resistor feature, and reduced the overall part count and cost. Best of all, we’re working to make assembled PCBs available with world-wide shipping. The how-to should be ready in a few weeks.
The Arduino MEGA is official and even more expansive than we originally thought. It has 54 digital i/o pins. 14 of those can be PWM outputs. Along with 16 analog inputs and 4 UARTs. It is even compatable with most shields for the Arduino Duemilanove or Diecimila.
[youtube=http://www.youtube.com/watch?v=vBRRR0BQyz0]
This year’s Google summer of code has been kicked off with a fairly substantial amount of participants. You can still submit an application until April 3rd, to join the roughly 2,500 “graduates”. For those who don’t know what it is, the Google summer of code pairs developing programmers with open source projects and funding. It’s a great program, resulting in advances in some programs that we follow. We’ve talked about several of the groups that will be participating this year, such as the NUI group, rockbox, openstreetmap, and videoLan.
