BASTL Instruments Kompas

Bastl Instruments

Regular price CAD$219.00

Kompas is a three-coordinate probabilistic pattern navigator. Each coordinate has a unique traveling pace and a dedicated trigger output. The amount of probability can be adjusted manually or by external voltages. Once a coordinate has been adjusted, a new pattern is generated and looped until the next change of direction.

This tool is the outcome of the environment we are in and is inspired by the non-linear approach to music and life – don't build any expectations, choose your direction, and discover new paths

Unlike common probability operation, instead of filtering a pre-determined sequence, Kompas uses probability to generate new looping patterns based on the direction you choose.
  • Width: 5HP
  • Depth: 35mm
  • Power: 30mA @+12v
  • Manual

  • global clock and reset input
  • 3 x 32 step pattern generators with traveling algorithms
  • 3 CV inputs for coordinate modulation
  • 3 trigger outputs
  • 2/5/10ms selectable trigger length (via boot settings)
  • DIY and hacker-friendly Arduino programmable hardware


Behind Kompas there is Arduino-compatible hardware (ATMEGA328P chip) which can be re-programmed and hacked for different Eurorack applications.


  • 3 linear pots (B100k)
  • 3 CV inputs (0-5V protected circuit)
  • 3 trigger/gate outputs
  • 2 trigger/gate inputs


  • 2 LEDs hardwired to trigger/gate inputs
  • 3 LEDs hardwired to trigger/gate outputs
  • 3 LEDs accessible via backside header

bottom board extra pins:

  • 5 I/O digital pins (3 of them are connected to LEDs via jumper by default)
  • +5V and GND
  • RX connection pad (suitable for MIDI hack)
  • 6-pin FTDi connector

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