Steve, an avid ViewPort user recently gave a presentation on his computer vision project using ViewPort with the Propeller to the Chicago robot club. His files are here:
I met CJ from Circuit Cellar at a conference several years ago. Soon after, he helped me publish an article about the DanceBot and he’s now editing my robotics book. Here’s an interview with their associate editor:
ViewPort and the Propeller are being used in lots of cool projects- check this one out:
MagnetDrives AG is a company based in Zug, Switzerland that specializes in developing electrical motors and sensors for applications ranging from 60 mNm to 100 kNm. Recently, the company was tasked to develop and produce a resolver system for an 8 Megawatt synchronous motor. Put simply, they were asked to build a device which could accurately measure the angle of the motor’s shaft. This measurement is important to control and optimize the motor’s performance.
MagnetDrives was asked to build an exotic measurement system in only 8 weeks.
MagnetDrives chose proven off-the-shelf software and hardware to reduce development time of the resolver and qualification system. Pickup coils mounted on the perimeter of the 60cm diameter resolver detect the mechanical angle of the motor’s shaft. Theses signals are fed to a custom PCB that features a Tamagawa chip whose output is read by a Parallax Propeller microcontroller. The Propeller runs code to process the resolver signal and also compares it with a reference Renishaw measurement system in order to qualify the resolver signals. ViewPort is used to display the microcontroller’s results in real time using a familiar Digital Oscilloscope interface. ViewPort was also used to adjust calibration parameters on the fly and to export data to Matlab and Excel for later analysis.
I have been using the Standard version of ViewPort for a while now and love it. I find that debugging the Prop is one of the harder things to do and it sure makes it easier.
I’m headed around the world to give a dozen presentations about my projects to various clubs, companies and schools. Â Here’s a link to photos and videos from my first talk- given to the Robotic Society of Southern Â California- just an hour after flying in from New Zealand!
Here’s the article:Â Presentation to Robotic Society of Southern California
Curtis has developed a tool that helps archaeologists and detectives to read impressions made into metals like coins or guns evenÂ when they’ve been sanded of.
Here is hisÂ interview with a local tv station.
Here some more details:
I got a great deal of help from the forum members and I feel the project should be in the public domain. I enjoy learning about electronics and love Parallax products. My field of expertise is Archaeology, but I love Physics also. My final eddy current analyzer probe included a hall effect sensor. I will be showing this technology to law enforcement and other government agencies and will be offering my services free of charge in the near future. I will insure that I plug Parallax and ViewPort as well. I ordered and got a surface mount version of all the supplies needed to build my instrument in a smaller footprint.
Landing gently on the moon is a good application of a fuzzy logic controller. ViewPort, the premier debugging environment for the Parallax Propeller (a multicore microcontroller), includes an object that implements a fuzzy logic engine which is controlled graphically from within ViewPort. Watch the video to learn about the physics simulation and fuzzy logic controller included in ViewPort’s lunar lander tutorial.