Free reference guide
CircuitHacks – MIDI Synth Engines Cheat Sheet for Novation Circuit Tracks
A free, detailed reference guide to the new MIDI synth engines, controls and modulation features introduced by CircuitHacks.
More possibilities, easier to navigate
CircuitHacks brings an impressive range of new creative possibilities to the Novation Circuit Tracks. With additional sound engines, advanced modulation, FM synthesis, granular processing, sample playback and new sequencing features, this compact groovebox has become an even more powerful instrument for sound design and live performance.
To make exploring these features easier, we've put together a free MIDI Synth Engines Cheat Sheet. The guide provides a structured overview of the available engines, pad assignments, knob functions, Shift controls, modulation options and important operating shortcuts.
Whether you're experimenting with synth sounds, building drum patches or exploring the modulation matrix, the reference is designed to help you find the right controls quickly.
What's included?
- Overview of the MIDI sound engines and their pad colors
- Engine selection, patch management and saving
- Knob assignments and Shift functions
- Oscillator, filter, envelope and LFO controls
- BPM-synchronised LFO modulation
- Virtual analogue synthesis and drum synthesis
- Granular synthesis and sample playback
- FM synthesis with 16 algorithms
- Modulation matrix and automation
- FX Sequencer and Step Drummer
- Differences between supported firmware branches
No registration required
Free PDF downloads
Both versions are free to download.
Firmware compatibility
The initial reference is based on CircuitHacks Beta 3.17 and RC2.06, using project documentation and implementation information available on October 21, 2026. Some experimental features are available only in the Beta firmware.
CircuitHacks is under active development. Functions and controls may change in future releases. Always check the original project for the latest firmware, compatibility information and installation instructions.
About CircuitHacks
CircuitHacks is an independent community-developed firmware project for the Novation Circuit Tracks. It significantly expands the instrument's capabilities and opens up new possibilities for synthesis, sampling, modulation and sequencing.
A huge thank you to the developer and contributors for making these features available to the community.