SX210 MIDI Interface parts list R. Grieb 5/25/2015 Ref Des Description Digi-Key Part # U1 PIC18F2420 Microcontroller PIC18F2420 U2-U9 74HCT373 Octal Latch 74HCT373 D1-D9 1N4148 signal diode 1N4148 ISO1 6N138 Opto-Isolator 6N138 R1 1/4W 5% 220 Ohm resistor 220Q R2 1/4W 5% 1.0K Ohm resistor 1.0KQ R3 1/4W 5% 4.7K Ohm resistor 4.7KQ R4 1/4W 5% 10K Ohm resistor 10KQ RN1 not used, do not install C1-C10 0.1 uF Ceramic capacitor BC1148CT C11,C12 22 pF Ceramic capacitor BC1005CT X1 6.5 MHz crystal X415 - 20-pin PCB male header part of S2011E-36 - 2-pin PCB male header part of S2011E-36 - 20-pin IDC female ASC20H - 20-conductor ribbon cable SW1 4-pos DIP switch - 5-pin DIN MIDI female Sockets for PIC, HCT chips and Opto-Isolator