Ed Stover, Carol Leiker and Dave Jaksha have made excellent progress in defining, constructing, and operating a prototype multi-function hand paddle. The interface to the hand paddle is RS232 from a control computer, which loads the image data to display, and reads and interprets the switch closures from the hand paddle. The system control then is through the control computer. Ed has built a prototype unit and is currently working on its packaging. Carol has implemented the control computer code to load the image bitmaps, configure the displays for various hand paddle functions, and read the switch activity.
Work continues on the new guider detector.
Each element of the detector is digitized and fed to a Digital Signal Processor board with a limb detection algorithm to determine the limb position on each of the arrays. The eight detected limb positions are then processed to determine the disk position error. The error is then digitally filtered. The unique element of this design is the observing position weighting of the guider signals.