Building my first kit in a long time.
Finding a MIDI to CV converter is pretty easy in Eurorack format, but CV to MIDI clock converters
are rarer.
I'm looking for a module that will convert analog clock to MIDI clock.
Hopefully this will do the job.
according to the manual it does:
1. Clock input to DIN MIDI & USB MIDI CLOCK out
2. MIDI CLOCK to CLOCK OUT
Build notes (official)
The official build notes are great.
My notes are just to help me trouble shoot should I encounter any probs.
The supplied kit makes everything easy.
Sourcing parts is often more that half the work.
There are 2 boards: Logic & control.
Diodes first
all are 1n4148s
The 20Mhz crystal.
This is the clock source.
Caps next.
there are six 100nF caps - do these first.
c1, c4,c5,c9,c15,c16.
Four 51pF caps
c2,c3,c6,c8
Two 15pF ceramics
c7,c11
These go either side of the crystal
Electrolytic caps
c10, c13,c14
IC sockets
Spacers - standoffs -- headers
Once you screw in the standoffs, soldering the headers is easy.
Power (10 pin).
Switch & i2c header
The red switch sets the midi channel.
It's kind of a reverse binary number system
offoffoffoff = binary 0 = Midi 1
ONoffoffoff = binary 1 = Midi 2
offONoffoff = Midi 3
.......
offONONON = binary 14 = Midi 15
ONONONON = midi 16
etc
thAT square shaped black socket is the header for a i2c connector.
It connects to the expander module.
Time for c12
The 220 nF capacitor is pretty big so needs to be twisted a bit to fit in nicely.
transistor voltage regulators
VR1 - 78L05
supplies 5V
TL431
U3
This is a shunt regulator or to use its long description, its a
programmable precision voltage reference IC.
To be continued ......
Part two is here
MST MIDI to CV Converter - sYNTHROTEK - part 2
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