TK. Posted January 12, 2008 Report Share Posted January 12, 2008 Although I initially planned to cancel the project (which I've implemented years ago), I finally decided to release the MBHP_USB_PIC "as-is" with a documentation of the known issues.-> http://www.ucapps.de/mbhp_usb_pic.htmlShort summary:In general it works fine under Windows and Linux, but there is a potential risk for data loss when large SysEx dumps are sent and received concurrently. However, MIOS uploads are unidirectional, and therefore working stable enoughWindows legacy driver is not multiclient capable. This means: you have to close your MIDI software (or release the MIDI ports) when using MIOS StudioThe module is not working correctly under Mac OS X (tested with Leopard only)the latest PIC18F4550 (or PIC18F2550) revision 5 is required to overcome the EUSART bugno PCB available (yet), but MBHP_CORE module can be used. Just add the USB socket, a 470 nF cap, replace the crystal by a 20 MHz type, and add a Reset and Bootloader button.Best Regards, Thorsten. Link to comment Share on other sites More sharing options...
bill Posted January 13, 2008 Report Share Posted January 13, 2008 great ;Done more time, thank you Thorsten !! Link to comment Share on other sites More sharing options...
Mr. zip Posted August 27, 2008 Report Share Posted August 27, 2008 A 4Mhz crystal can also be used due to how the 4550's PLL works. Link to comment Share on other sites More sharing options...
Soclt Posted October 30, 2008 Report Share Posted October 30, 2008 I have made eagle SCH and PCB for 4550 if needed. Seems like working.P.S. I'm not a pro in engineering, so maybe anyone could make single sided PCB from schematic? Link to comment Share on other sites More sharing options...
nILS Posted October 30, 2008 Report Share Posted October 30, 2008 Post the .sch here and we'll see what we can do ;-) Link to comment Share on other sites More sharing options...
Soclt Posted October 31, 2008 Report Share Posted October 31, 2008 Here You go, check for mistakes. Should be fine, but don't know if all nominals are good, because I like clone button :)USB_PIC.rarUSB_PIC.rar Link to comment Share on other sites More sharing options...
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