i like to build the md808 with microlarge pcb. The analog part i don't have problem, i understand and i have all information to build it.
My problem is with the cpu part, i don't understand how to build it.
the parts is clear:(http://www.ucapps.de/midibox_808.html)
1 x MBHP_CORE, stuffed with PIC18F4620
2 x MBHP_DINX4 (only 6 74HC165 shift registers used)
2 x MBHP_DOUTX4 (7 74HC595 shift registers used)
1 rotary encoder (for tempo, could also be used for additonal purposes in future)
33 buttons
35 LEDs (33 could be integrated into buttons, 2 additional LEDs to display selected layer and record mode)
and optional hardware.
My problem is taht i don't have any schematic for built this seq.
If someboy can help me with this. i will be very happy.
Thanks and best regards