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Key2Midi 64 et 32

Encoder MIDI board

User manual

Preamble

The Key2Midi board isn't a musical instrument by itself. It is intended to be 
the interface between an accordion or organ keyboard and a MIDI music 
sound module or any electronic equipment responding to Midi standard.

The purpose of this user manual is not to explain the MIDI protocol. It is 
assumed the user has a basic knowledge of this

Main features:

64, 48 or 32 direct input, non-multiplexed. Multiplexing is done in the 
board itself

inputs can be +5v (High) or Gnd (Low)

Summary of Contents for Key2Midi

Page 1: ...ccordion or organ keyboard and a MIDI music sound module or any electronic equipment responding to Midi standard The purpose of this user manual is not to explain the MIDI protocol It is assumed the user has a basic knowledge of this Main features 64 48 or 32 direct input non multiplexed Multiplexing is done in the board itself inputs can be 5v High or Gnd Low ...

Page 2: ...essories To send a midi note you have to apply a 5 volt voltage or Gnd to one input The board can supply the power for optical rank if needed with limit of 700mA Some optical kits will be available soon Electrical features The board needs a power supply that gives between 8 and 15 volt DC A small phone old fashion charger 8 12volt will work fine if there is no optical reader to power Please avoid ...

Page 3: ...please power the optical equipment directly with a different power supply just let the Gnd common to the 2 power supplies The inputs are pulled down by a 22ko resistor Take this in account for your photo transistors L H modes The normal mode is H high ie the inputs are active sending an note ON when we apply 5 volts Alternatively in L mode the inputs are active and sending the note ON when the Gnd...

Page 4: ...meters to the points marked A1 and A2 A1 is the input for the expression A2 for the volume as well as on the and gnd see photo Ask me before ordering if you want the board to send another control change If you do not use these inputs you must leave the jumpers in place as in the photo linking the A1 and A2 to 5v In this case at startup two messages ...

Page 5: ... anything else and without a computer directly on the board To verify or check the board s currently set MIDI channel push the channel button once and count the number of red LED flashes That number is the MIDI channel To set the MIDI channel 1 Push the setting button the green led switches off While holding it down press the channel button as many times as the channel you want for example once fo...

Page 6: ...07168 69227 html 1 Link your computer out to the K2M board Midi in Do not plug anything in the board Midi Out socket 2 Switch on the board 3 In the software Parametor fill the boxes with the notes you want regarding of exit numbers 4 select 64 outputs or 32 for K2M 32 and setting 5 Press Send The green LED on the card will shut down the red LED will light up briefly then the green LED is on again ...

Page 7: ...tor 0 up to 127 ms The feature is useful when scanning an organ roll with some bridges on notes If you push the channel button an all note off message is sent on all the 16 channels Guarantee The Key2Midi as all the Orgautomatech boards has a one year guaranty against manufacturing fault Each board is tested before shipping I advice you to try it with its factory settings before changing the note ...

Page 8: ...di receiving channel the same as the channel being sent Don t forget the power supply must be a regulated DC Orgautomatech Christian Blanchard 113 rue Champommier 79000 Niort FRANCE 33 0 6 40 88 11 95 chris orgautomatech fr www orgautomatech fr SIRET 399 479 138 00022 Mise à jour le 18 12 20 ...

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