Pin Wiring for the Fatar 61 Note Velocity Sensitive Keyboard Encoder

This design is based on the requirements of a 61 Note Velocity sensitive Fatar keyboard. The keyboard is arranged as two matrices of 8x4 (32),for the Left Hand Bass range. Also an 8x4 (32) matrix, for the Right hand Treble range, but only 29 of the 32 switch positions are connected. So this produces a total of 61 (32 + 29) keys.

The 61 note range is from C2 (MIDI Number 36) to C7 (MIDI Number 96). The startnote of connector1 Bass Left Hand Side is set to C2 (MIDI Number 36).  The first matrix of 8x4 (32) goes to G4 (MIDI Number 67). So the connector 2 Treble Right Hand Side starts with a startnote of G#4 (MIDI Number 68 ).

The connections can be made via two 16-way  Micromatch ribbon cables, which can plug in directly to the corresponding Micromatch socket on the Fatar keyboard PCB. Each of the Pins T0 to T7 and MK0, BR0 to MK4, BR4 are connected to their same relative Pins in each of the diagram sections. Note that all these connections are already made on the Fatar keyboard PCB to the 20 way Micromatch connector.

Connector 1 16-Way Bass Left Hand Side

Software

Labels

Miccromatch

Pin Names

Micromatch

Pin Numbers

Arduino Mega

Pin Numbers

ROW0B T0 16 14
ROW1B T1 15 15
ROW2B T2 14 16
ROW3B T3 13 17
ROW4B T4 12 18
ROW5B T5 11 19
ROW6B T6 10 20
ROW7B T7 9 21
BR3B BR3 8 29
MK3B MK3 7 28
BR2B BR2 6 27
MK2B MK2 5 26
BR1B BR1 4 25
MK1B MK1 3 24
BR0B BR0 2 23
MK0B MK0 1 22

 

Connector 2 16-Way Treble Right Hand Side

Software

Labels

Miccromatch

Pin Names

Micromatch

Pin Numbers

Arduino Mega

Pin Numbers

ROW0T T0 16 62 (A8)
ROW1T T1 15 63 (A9)
ROW2T T2 14 64 (A10)
ROW3T T3 13 65 (A11)
ROW4T T4 12 66 (A12)
ROW5T T5 11 67 (A13)
ROW6T T6 10 68 (A14)
ROW7T T7 9 69 (A15)
BR3T BR7 8 39
MK3T MK7 7 38
BR2T BR6 6 37
MK2T MK6 5 36
BR1T BR5 4 35
MK1T MK5 3 34
BR0T BR4 2 33
MK0T MK4 1 32