PtitFx V0.1.121b

OSC effect generator Windows (pre-release).

⬇️ Download PtitFx Windows (.zip)

Mac OS Arm64 (pre-release).

⬇️ Download PtitFx Arm (.zip)

Mac OS Intel x86 (pre-release).

⬇️ Download PtitFx Intel (.zip)

To discuss the software, you are welcome to join the Discord: PtitFx Discord server . PtitFx generates LFOs/effects (chases, pulses, ramp, sine, random…) to drive channels via OSC. It’s built for live use: a clean UI, real-time visualizer, straightforward controls (amplitude, offset, speed/frequency, phase, width) and shareable .json presets.

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  • Outputs: OSC
  • Waveforms: Sine, Triangle, Saw, Pulse (duty), Random/Noise, Steps, Custom table.
  • Channel mapping: groups, from edges/center, offsets, sequences.
  • Tempo: speed/frequency today — Tap Tempo & BPM quantize planned.
  • Presets: import/export as .json.
  • Platforms: Windows + macOS (pre-release).
  • Thanks: Many thanks to the community for the help and improvments.
  • Community: Sl200mk2, Kreps, LightUp, Poypoy and much more

Dev log — November 2025

What’s new in the 0.1.12x branch:

  • New show save/load system (.ptitfxshow.json).
  • Improved tweening on sliders and OSC out.
  • macOS builds (ARM + Intel) via GitHub Actions.

What’s still broken / weird:

  • Visualizer sometimes fails to open on macOS Intel.
  • Groupe and Preset to improve for better understanding
  • Occasional “heavy” feeling on “Save show” with big setups.

Next steps:

  • Stabilize macOS visualizer (Intel) and test with more rigs.
  • Polish OSC sending by raising the output to 1000/sec.
  • Write a short “getting started” page for new users.

Origins — October 2025

This was the very first usable version of P'titFx: one window, one LFO, and a very basic OSC output to D::Light.

  • Simple sine / triangle / saw waves.
  • No show manager, no presets, no remote.
  • Used mainly for experiments on small rigs and punk shows.

From here the project slowly grew into a more serious tool: attributes/groups, better tweening, visualizer, and cross-platform builds.

Short roadmap: Mac versions, Tap Tempo, BPM quantize, OSC command list In/out,...

Support the project 💛

If you’d like to help Le P’tit Spot develop free tools for artists and theatres, you can support the project securely via PayPal: