MIDI to Roland Din/Sync24 converter. ------------------------------------ ((c)1993/1994/1995/1996 John A. Tuffen) ------------------------------------------------------------------------------ Parts list for new MIDI->sync converter, could be useful.... Integrated Circuits: 1x 74HC04 (hex inverter) 1x CDP6402 (uart) 1x 74HC133 (13 input NAND gate) 1x NE556 (dual timer) 1x TIL111 (opto-isolator) Transistors 2x BC549 Resistors 1x 10M 1x 1.5k 1x 4.7k 1x 1k 1x 220 ohm 2x 10k 1x 5.6k 1x 2.2k 2x 47k Capacitors 1x 47pF ceramic 1x 1nF ceramic 1x 3.3nF ceramic 2x 100nF ceramic 1x 47uF electrolytic Miscellaneous 2x 5pin DIN skt (chassis mounting) 1x SPST toggle switch 1x 500kHz ceramic resonator ----------------------------OPTIONAL----------------------------------- 5v supply components 1x 7805 voltage regulator 2x 100nF ceramic capacitors 1x 'power connector to suit your wall-wart' ----------- +9v--------------------| |------------------- +5v | | 7805 | | | ----------- | IN ----- | ----- OUT 100nF ----- | ----- 100nF | | | 0v-------------------------------------------------- 0v --------------------------------------------------------------------- If you have found this useful, let me know - suggestions will be considered in any future revisions. If you want to re-distribute this schematic, I would very much appreciate it if you could keep this file with the drawing, if you want to pay me (!) E-mail me for my snail-mail address :) Comments/money/requests to me at: E-mail: jat5@unix.york.ac.uk, or jat@ohm.york.ac.uk