X893

Time to time i need prepare small C program for testing hardware so not need write a complex program with host compilation. So i port small C interpreter to EFM32. Very helpfull for me. Now use USART1 to communicate. Need ~ 45Kb flash and 2K RAM. All other flash/ram used for interpreter (or as small file storage). Target MCU reset Enter program code Call function See result After add wrappers to hardware modules i can easy call various interfaces. See original project here http://code.google.com/p/picoc/ Modified source code available on github . Open Keil project from ports/picoC.uvproj...

TinyG Control Center. Based on GCodeSender but fully change. Source code available on GitHub. Add GCode debugger and some fixes.

TinyG compatible controller for CNC. Build on ATXMEGA256A3. 2x Step-down DC-DC for 3.3V and 5V. Plugin adapters based on DRV8818 or DRV8825 from TI and miniUSB or bluetooth link to host computer. Modified xboot support bluetooth adapter. Windows xboot loader for download hex/bin file to device. To control i use modified CNC control center...

Now in development stage, with my biologist friend Addy de Jongh ( http://www.vriendenvandeotter.nl ), but all software applicable from high models. Small time for fixup (4-7 seconds with offline A-GPS) increases standalone battery time. All parts made in dimensions for 950 mA battery (54x32 mm - thanks China brothers). This photo contains all components - GPS active anetenna and GSM antenna. (50 ec not a price). Additional BMA180 accelerometer (small black chip at left top) can help to define activity and reduce ON time. In center placed STM32 MCU. Now STM32F101T8/B (or 103 if microUSB is mounted...

Prototype PCB (forked from OpenPilot) for copter control and RF link (PiPextreme). Control board and RF board (PipXtreme). Mount to control board or via USB to host PC....