Garden Listener


Random control messages generator from biometric signals.

If you’re purchasing our SMD pre-soldered DIY kit, please download from here:

Garden Listener for DIYers (DIY Guide + Interactive BOMs)

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The Garden Listener is a random control messages generator from biometric signals. It detects conductivity variations on living beings’ surface and transforms them into MIDI notes, ranging from C-1 to C8, and CV signals (0 – 5V). Its behavior can be tamed through the one-knob menu from which you can choose and modify:

  • probes’ sensitivity (making it more or less sensitive to current variations);
  • scale (chromatic, major, minor, indian and arabic);
  • MIDI channel (from 1 up to 16);
  • LEDs’ brightness.


Conductivity variations are detected by the Probes Input and converted into MIDI notes in real time according to the Main menu settings. Each MIDI note exits through the MIDI output, allowing you to take advantage of the sound of either any synthesizer equipped with a MIDI port or any VST in your DAW, and gets converted into an analog signal.

Trigger and Gate are fired every time a new note is generated, their voltage output can be modified with the respective attenuator (0 – 5V).

All the MIDI notes are converted into variable voltages (0 – 5V) depending on their pitch and exit through the CV output (1V/oct).

The CV output behavior can be modified via the Octave Selector which acts as a “CV equalizer” from which you can choose to generate CV only if the respective MIDI note lies within a certain octave range.
For once, leave those LFOs alone, and let any living conductive being modulate your signals.
The module comes with 3.5mm white probes and a set of snap-on adhesive reusable electrode pads. A MIDI-TRS type A adapter (not included) is required for the MIDI output.
The module requires calibration for a proper 1V/oct output.

If you’re looking for more probes, electrode pads replacements or a MIDI-TRS cable, check our suggestions on the Tools You Might Need page.

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PDF manual

Additional information

Weight 0,300 kg
Dimensions 4,03 × 12,85 × 2,26 cm

Built module, SMD pre-soldered


Built Module, SMD pre-soldered



Max depth


Current draw

+12V: 24mA

-12V: 20mA

+5V: 0mA

Panel material

1.6mm FR4 black front panel with gold finish