Hexinverter MIDI-CV

Part 

Qty

Designators

Note/s

Base Parts (all formats need these parts)

CA3140 Precision Operational Amplifier

4

IC1, IC2, IC3, IC4

Mouser: 968-CA3140EZ -- DO NOT GET CA3140A!

6N137 Optocoupler

1

IC9

Mouser: 757-6N137F

PIC16F88 Microcontroller w/ MIDI2CV firmware

1

IC6

Included pre-programmed with PCB/kit from hexinverter.net

MCP4822 dual 12b DAC

2

IC7, IC8

Mouser: 579-MCP4822-E/P

78L05 5V regulator

1

IC5

Mouser: 512-LM78L05ACZXA

The use of IC sockets for all integrated circuits is HIGHLY recommended.

2N3904 NPN Transistor

4

Q1, Q2, Q3, Q4  

1N4148 small signal diode

5

D1, D2, D3, D4, D5

1N914 or any other small signal diode should work fine as well

5mm LED

5

LED.S, LED1, LED2, LED3, LED4 

I recommend diffused LEDs.

.1uF capacitor

6

C3, C4, C5, C6, C7, C8

5mm lead spacing

47uF electrolytic capacitor

2

C1, C2

2.5mm lead spacing, 6.3mm diameter

220R resistor

5

R1, R22, R26, R31, R36

1/4W, 1% metal film

470R resistor

6

R5, R8, R11, R14, R16, R17

1/4W, 1% metal film

1k resistor

5

R2, R6, R9, R12, R15

1/4W, 1% metal film

4.7k resistor

8

 R20, R21, R25, R29, R30, R34, R35, R39

1/4W, 1% metal film

10k resistor

3

R3, R18, R19

1/4W, 1% metal film

33k resistor

4

R4, R7, R10, R13

1/4W, 1% metal film

130k resistor

4

R24, R28, R33, R38

1/4W, 1% metal film

200k resistor

4

R23, R27, R32, R37

1/4W, 1% metal film

10k cermet 12 turn trim pot (straight lead pattern)

4

P1, P3, P5, P7

Mouser: 858-67WR10KLF

22k (or 20k) cermet 12 turn trim pot (straight lead pattern)

4

P2, P4, P6, P8

Mouser: 858-67WR20KLF

Panel mount MIDI connector (5 pin DIN)

1

Mouser: 568-NYS325

M3 machine screw and nut for MIDI connector

2

M3 machine screws (M3x35mm)

4

For connecting the boards together

12mm PCB spacers

8

For connecting the boards together

40pin male .1" breakaway header

2

For connecting the PCBs together -- broken into appropriate sections

40pin female .1" breakaway header

2

NOTE: not in Mouser cart. Find these somewhere else!

MIDI2CV PCB Set

1

N/A

http://www.hexinverter.net

Eurorack Specific Control Board Parts (included in full eurorack kits)

PCB Mount ON-OFF-ON toggle switch

1

SW.MODE

Mouser: 108-0044-EVX

LED PCB spacer [OPTIONAL!]

5

Mouser: 593-STD240B

3.5mm vertical mount jacks

9

CV1, CV2, CV3, CV4, GATE1, GATE2, GATE3, GATE4, SYNC

http://erthenvar.com/store/eurodiy/35hardware/jack35mmv

Eurorack power cable

1

http://erthenvar.com/store/eurodiy/power/cable1016

Eurorack power connector

1

Power

Stuff you will need ONLY if not building eurorack:

Assorted Panel Wire (only needed if not building eurorack)

N/A

N/A

Power connector

1

Power

MTA-156

PCB Mount ON-OFF-ON toggle switch (panel mount)

1

SW.MODE

Jacks

9

CV1, CV2, CV3, CV4, GATE1, GATE2, GATE3, GATE4, SYNC

To match your format