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Another innovation
from Paul Maddox is his
MIDI to SDS Trigger converter.
an
earlier version of the MIDI2SDS(X)
This re-released version of the MIDI-2-SDS
has the same features as his Version 2 model:-
- converts MIDI signals into SDS
triggers, you can use it to fire other drum machines
- the unit has 8 trigger outputs,
each of which is velocity sensitive
- control of the 'gate' time is
via an onboard preset (~1mS to ~132mS),
- it has a 'learn' mode, which
lets you assign different notes to different triggers
- it has 8 LEDs, so you can see
which channel is being triggered and which channel you are
'teaching'.
The new pcb release
includes the following minor changes:-
- simple filter on AVcc supply
to improve noise immunity of the analog circuitry
- onboard-connector option for
MIDI-IN
- onboard-switch option for LEARN
- diode protection for 78L05
regulator
- additional input filtering
on power supply
- option of a 16MHz crystal or
a 16MHz Oscillator module
- option of dual power rail with
extended trigger output voltage range
The
latest release of the MIDI2SDS firmware now includes the following
additional features:-
- Dipswitch
option for inverted outputs. With the dipswitch off the outputs
are positive going signals from 0V to 4V*. With the dipswitch
on the outputs are negative going signals from 4V to 0V* (*NOTE:
actual voltage is MIDI Velocity dependent)
- Dipswitch
option for GATE mode. With the dipswitch off the MIDI2SDS
is in TRIGGER Mode where the ON time of the outputs is defined
by the setting of the pulse-width trimmer. With the dipswitch
on the MIDI2SDS is in GATE Mode where the outputs respond
to MIDI NOTE ON and MIDI NOTE OFF messages i.e. the outputs
will turn on when a NOTE ON message is received and turn off
when the associated NOTE OFF message is received.
Original schematics
and circuit details can be found on Paul's website at
http://www.vacoloco.net/synths/midi2sds
Updated schematics
for the Version 3 pcb are here
MIDI2SDS(X)
schematics & pcb overlay
Bill
Of Materials for small model (3mm LEDs & 3.5mm jacks)
Bill
of Materials for large model (5mm LEDs and 6.35mm jacks)
MIDI2SDS(X)
Documentation
Current version
of MIDI2SDS(X) software (V3.9) for
original ED103-MIDI2SDS pcbs
MIDI2SDS(X)
software (V3.5) for older V3
pcbs
A kit of parts and
a PCB are now available
MIDI2SDS(X)
is now available in a 19" 1U rack enclosure
The
MIDI2SDS(X)-1U requires an AC power supply in the range 10VAC
to 15VAC @ 200mA
and
also in 3U Eurorack format
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