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MINI-MIDI USBMIDI to CV CONVERTER

EMBEDDABLE CARD PRODUCES TWO CONTROL VOLTAGE AND TWO GATE SIGNAL OUTPUTS

Mini-midi assemble board
The assembled Mini-MIDI USBMIDI to CV Converter.

The MINI-MIDI USBMIDI to CV converter will convert USBMIDI messages received via USB to two control voltage outputs and produce accompanying gate voltage pulses. When powered by the USB host, the control voltage range is 0 Volts to slightly less than 5 Volts and is scaled at 1V/Octave. If the output circuit is powered by an external power supply, the board can supply a voltage range of 0 Volts to 10 Volts with 1V/Octave scaling. 


The board can be used as a first surface mount project, for surface mount soldering practice or as a key fob for that extra set of garage keys. The information below includes assembly instructions for the board and links to obtain programmed microprocessor chips or a complete parts kit.

MINI-MIDI PARTS LIST

MINI-MIDI Parts List

Description

Desig.

Quan

Manufacturer

Mfg. part number

Digikey PN

1K Ohm 1% 0805

R1

1

10K Ohm 1% 0805

R2

1

1K Ohm 1% 0805

R3

1

1K Ohm 1% 0805

R4

1

100K Ohm 1% 0805

R5

1

100K Ohm 1% 0805

R6

1

100K Ohm 1% 0805

R7

1

100K Ohm 1% 0805

R8

1

100K Ohm 1% 0805

R9

1

100K Ohm 1% 0805

R10

1

100K Ohm 1% 0805

R11

1

100K Ohm 1% 0805

R12

1

1K Ohm 1% 0805

R13

1

220 Ohm 1% 0805

R14

1

4.7K Ohm 1% 0805

R15

1

220 Ohm 1% 0805

R16

1

4.7K Ohm 1% 0805

R17

1

10K Ohm 1% 0805

R18

1

10K Ohm 1% 0805

R19

1

10K Ohm 1% 0805

R20

1

10K Ohm 1% 0805

R21

1

1K Ohm 1% 0805

R22

1

1K Ohm 1% 0805

R23

1

0.47uF 25V ceramic 0805

C1

1

0.1uF 50V ceramic 0805

C2

1

1.0uF 25V ceramic 0805

C3

1

1.0uF 25V ceramic 0805

C4

1

0.1uF 50V ceramic 0805

C5

1

MMBT3906 SOT23

Q1

1

ON Semiconductor

MMBT3906LT1G

MMBT3906LT1GOSCT-ND

MMBT3906 SOT23

Q2

1

ON Semiconductor

MMBT3906LT1G

MMBT3906LT1GOSCT-ND

MMBT3904 SOT23

Q3

1

ON Semiconductor

MMBT3904LT1G

MMBT3904LT1GOSCT-ND

MMBT3904 SOT23

Q4

1

ON Semiconductor

MMBT3904LT1G

MMBT3904LT1GOSCT-ND

PIC 16F1459 SOIC20

PR1

1

Microchip

PIC16F1459-I/SO

PIC16F1459-I/SO-ND

LT1117-3.3 SOT223-3

U4

1

Diodes Inc.

ZLDO1117G33TA

ZLDO1117G33DICT-ND

MCP4822 SOIC8

U7

1

Microchip

MCP4822-E/SN

MCP4822-E/SN-ND

OP1625 SOIC8

U8

1

TI

OPA1652AIDR

296-39101-1-ND

25VF010 SOIC8

U9

1

Microchip

SST25VF010A-33-4I-SAE

SST25VF010A-33-4I-SAE-ND

T1 LED

D2

1

MINI B USB CONNECTOR TH

J2

1

Molex LLC

548190519

WM17115-ND

8 PIN 0.1 in. header

J1

1

MINI-MIDI PC board

1

 

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Cottage Grove WI 53527

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Phone: 608 886-6503

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