Reprap32 -- 32Bit Reprap control based on AVR32

thingiverse

This control board, based on AVR32's AT32UC3B0256 CPU, serves as a functional alternative to the Gen4 Arduino Mega and its corresponding motherboard. The code has been adapted from Makerbot G3's (Version 2) AVR32 GCC. As of October 8th, 2011, the Atmel CDC driver for USB is successfully running on the hardware with terminal emulators. The next step involves incorporating it into the main REPRAP32 application. A USB branch will likely be created in the primary Git repository. The creator has yet to publish a branch and needs to learn how to do so correctly. Currently, they possess bare stepstick PCBs, allowing them to construct a full stepstick-based Prusa with USB RepRap32 for their daughter at college. They have measured the 64us stepper timer interrupt usage by the steppers, revealing 22% nominal and 36% worst-case scenarios, leaving 53 DMips of CPU available. The Gen3 stepper drivers on their Prusa functioned without issues after simply changing the cable connector from a 10-pin to a 6-pin IDC, even without altering settings in ReplicatorG. Issues mainly stemmed from pin assignments and improperly terminated end stops. The software now disregards these end stops. To view more information, visit the project's site at http://sites.google.com/site/reprap32. A new version will be pushed to GitHub after Labor Day, available at www.github.com/daveland/reprap32. Additional contributions and documentation are welcome.