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BBS-1K stands for Bus Bar Scanner for one keyboard. It has daisy-chain input, so another scanner of any kind can be connected to it. This way you can connect up to 8 keyboards, 64 potentiometers and control keypad to MRG3 controller board, which has only 4 inputs. Or 10 keyboards with use of MRG2. Keys must have one pole of each contact connected to ground, that's typical setup in older organ consoles. Keyboard is connected using four 16-pin IDCs. One connector covers 16 keys. An example of compatible plug can be found at Mouser part number D89116-0031HK.

As any other scanner board, this one cannot work just by itself, but it needs one of the master controllers to operate.


  • scans 64 contacts, 1 wire per key
  • daisy chain input, you can connect another scanners in series
  • usable with MRG2, MBBS, MIDI128, MPOT32
  • includes cable to master controller
  • dimensions: 71x35mm (2.8'' x 1.3'')

Here is connection diagram:

You may be interested also in the following products (click the image for more info):
RibbonTail 16-wire ribbon cable for contact inputs
WIPLUG breakout board distributing 2 ribbon cables to 32 screw terminals
WIPLUG2 small utility board for soldering individual wires to 16-pin header

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