Central control
Control Module Driver
The central ModSystem controller built around a Raspberry Pi Pico. It connects manuals, a pedalboard and the stop module, with separate driver-bus connections.
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Product catalogue
Ten modules for central control, key sensing, stops and LED feedback. Choose the solution for your instrument and request a quotation.
LED control
Control Module LED
A dedicated USB-MIDI controller for daisy-chained LED Driver 64 boards. It converts computer MIDI messages into LED-driver control signals.
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LED driving
LED Driver 64
A driver board for 64 individual LED channels, using four TLC5925 constant-current ICs. BUS_IN and CHAIN_OUT allow daisy-chaining to further boards.
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Keyboard – digital Hall
Manual 64 Hall
A manual board for 64 individual digital Hall sensors. Magnetic key sensing provides contactless on/off states to the central controller.
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Keyboard – switch matrix
Manual 64 Reed
A manual board that reads an 8×8 switch matrix for reed-switch or other suitable contact keyboards. The matrix accepts 64 switching points.
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Keyboard – analogue Hall
Manual 64 Velocity
A board sampling 64 analogue Hall inputs to track key movement. Central-controller firmware can derive key velocity from the 12-bit ADC’s raw samples.
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Stops and expression
Stop Expression 128
A module for stop switches and four analogue expression controls. It forwards switch-matrix and pedal signals to the central controller.
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Stops, LEDs and expression
Stop LED Expression 192
A board combining three 8×8 stop banks, LED feedback and four expression inputs. A single module handles switch scanning and illuminated stop indication.
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LED-matrix connections
8×8 Scan Matrix LED
An 8×8 row–column connection board for an LED matrix. IDC connectors provide organised wiring for 64 matrix positions.
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Switch matrix
8×8 Scan Matrix – diode
A Col-to-Row matrix board organising 64 switching points. Individual 1N4148W diodes provide isolation within the switch network.
DetailsMODSYSTEM / DRIVER BUS
From the keys to a sounding organ
Manual and pedal signals reach the central controller. USB–MIDI connects to a virtual instrument; the Driver Bus connects to matched driver modules for the physical organ.
- Sense
Input modules read the keys and switches.
- Control
Control Modul Driver links the console, USB–MIDI and driver ports.
- Actuate
A matched driver stage operates magnets and stop mechanisms.
Hybrid organ · turning control into movement
The Driver Bus links the central controller to the driver stages. Magnets, coils and stop actions need drivers and a separate power supply matched to the mechanism.
Console · where the system begins
Manuals, pedalboard, stop switches and expression controls each connect through the appropriate input module.
Visual feedback · growing with the instrument
The separate USB–MIDI LED system can provide 192 or 256 LED channels using 3 or 4 daisy-chained LED Driver 64 modules, with firmware configured for the module count.
Illustrative system diagrams. Hybrid driver modules, firmware, protection and power supplies are specified for each project. LED Driver 64 drives LEDs; it is not a magnet driver.