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LITSWThis board is most usable in organ emulators as stops/pistons addition to a MIDI set built with MRG, or MIDI128 boards. It takes care of 24 contacts and every one of them is paired with LED driver. This is to enable momentary normally-open switches to work as bistable lighted stops/pistons. One press of a button lights up associated LED, and Master board sends appropriate MIDI message. Next button press turns the light off and the master generates MIDI for off state. Part of the inputs (or all) can be assigned to work in 1-of-many mode, where pressing one button lights up the LED, and turns off all other ones in the group. LITSW can be used as any other scanner/expander with any Master controller available here As any other scanner board, this one cannot work just by itself, but it needs one of the master controllers to operate. Features:
The board has 3 black connectors for user devices, as shown in the photo above. Each of them covers 8 pairs of button+LED according to the following schematic: When using LITBO add-on board, the buttons must be wired the same way (shorting to GND), but outputs are then reversed, sinking current to GND in on-state, while the supply rail of the loads may reach 25V. You may be interested also in the following products (click the image for more info): LITBO power booster for LED outputs, up to 0.5A each WIPLUG breakout board distributing 2 ribbon cables to 32 screw terminals WIPLUG2 small utility board for soldering individual wires to 16-pin header |