The OpenRRI project ships in two parts: a prepared Linux/FPGA system image
for the Red Pitaya STEMlab 125-14 board, and the
openrri Python library for data
acquisition and RRI signal processing. This page lists the current and
previous releases of both. Full release notes are tracked on the
GitLab Releases tab.
Latest release: v0.4.1 (2026-06-11)
Version 0.4.1 is a Python library patch release that updates the
paramiko dependency to a version fixing a security issue. It builds on
the v0.4.0 platform release, which introduced a WebSocket-based DAQ
interface bringing multichannel modulation, software-adjustable sample
rates, continuous streaming and live RRI processing, with storage in the
HDF5 format.
Red Pitaya STEMlab 125-14 system image
The system image is unchanged at v0.4.0; no new image ships with v0.4.1.
- Factory boards: openrri-v0.4.0-factory.img.xz (sha256)
- Soldered boards: openrri-v0.4.0-soldered.img.xz (sha256)
The soldered variant is for boards that have been modified to provide a 0..2 V DAC output range. Use the factory variant for unmodified boards.
Python library
- Source tag: openrri v0.4.1
- API reference: openrri.org/doc/v0.4.1/
- Install from the source tag:
git clone --branch v0.4.1 https://gitlab.com/openrri/openrri.git
cd openrri
pip install .[daq]
Highlights
- New WebSocket DAQ interface with board discovery, multichannel modulation and software-adjustable sample rates.
- Continuous long-term streaming up to 8 MSps and short-term capture up to 125 MSps.
- Live, updating range-view and RRI channel demodulation plots.
- HDF5 storage for raw, demodulated and peak-detected data.
Previous releases
| Version | Date | System image | Links |
|---|---|---|---|
| v0.4.0 | 2026-04-20 | factory / soldered | doc, tag, notes |
| v0.3.0 | 2024-09-16 | legacy image | doc, tag, notes |
| v0.2.0 | 2023-12-06 | legacy image | tag, notes |
| v0.1.0 | 2023-11-10 | legacy image | tag, notes |
The single legacy image covers all pre-1.0.0 versions from v0.1.0 to v0.3.0. The project documentation refers to the latest release; older images are archived for reproducibility and should be used at your own risk.
Citation
If you use OpenRRI in scientific work, please cite the original paper on the Range-Resolved Interferometry method (DOI: 10.1364/OE.23.009415) and, where possible, also link to openrri.org.