The Doepfer MKE Universal Keyboard Electronics Module for 4/5 Octaves
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The MKE is a Universal Keyboard Electronics Module to build custom-made MIDI controllers that include a keyboard.
These units can be connected to MKE:
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Standard keyboard manufactured by FATAR/Italy with 2, 3, 4 or 5 octaves (e.g. the keyboard types TP6, TP60...64, TP/7, TP/8 or TP/9, diode matrix type "DF")
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Pitch bend wheel (special spring-loaded rotary potentiometer)
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Single Modulation wheel (special rotary potentiometer)
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Rotary or fader potentiometer for loudness/volume control (MIDI CC#7)
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After touch sensor or socket for sustain switch or another potentiometer for any MIDI controller
The MKE pc board has these controls available:
The 6 buttons are used to control these parameters:
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MIDI channel 1...16
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Transpose (lowest note in octave intervals, 0-12-24-36-48-60)
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Program change 0...127
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Controller number 0...127 resp. After touch
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Up (increment of the value shown in the display)
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Down (decrement of the value shown in the display)
In addition one can select between dynamic and non-dynamic operation. In the non-dynamic mode the (fixed) velocity value can be adjusted. The velocity implementation in the dynamic mode has been optimized for the Fatar keybed 61TP/9. When other keybeds are used the dynamic behaviour may be not optimal. It's not possible to change the dynamic behaviour for other keybeds.
MKE has a non-volatile memory for the parameters MIDI channel, transpose, program number, controller number and dynamic/non-dynamic mode. After the next power on the previous values are called up.
MKE is equipped with MIDI In and MIDI Out. The data appearing at the MIDI in are merged to the data generated by the MKE. Consequently several MKE can be daisy-chained or combined with other OEM controllers to build a custom-made MIDI controller.
MKE is available only as an assembled and tested pc board. The pc board measures are about 71 mm (length) x 85 (width) x 45 mm (height). Four mounting holes with 3 mm diameter are available for mounting the pc board to a suitable base or front panel e.g. with distance sleeves or spacers and screws.
An external power supply (7-15VDC@min. 100 mA) is needed. The pc board is equipped with a standard low voltage connector ( 5.5 mm outer diameter and 2.1 mm inner diameter, polarity: plus = center, minus = ring).
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