Public changelog for ADAR firmware

Each new entry in this changelog will be shared with our direct customers through a mailing list.

Want to test or deploy ADAR? Reach out to us at hello@sonair.com.

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[v1.8.8] 2026-05-11

‍Compatibility

• Hardware: v1.3
• ADAR Designer: v2.0 or later
• ADAR API: v2.0 or later.
• User manual v1.1 except chapter 6.x: use the new ADAR Designer user manual instead of chapter 6. Furthermore, the appendix "A.E. Public API resources" is outdated; see the ADAR API repository for updated public API.

Added

• Checksum on all network communication: All ADAR API resources now include a checksum on every request and response, providing integrity protection against transmission errors. As a consequence, all resources have been bumped from `v0` to `v1`. See the ADAR API repository for details.
• Real-time validator subsystem: A dedicated validation subsystem continuously monitors the main processing pipeline, detecting and reacting to faults in real-time.
• OSSD compliance: OSSD output monitoring is enabled. The device is compliant with the OSSD standard.
• Secure device access: Modifying device behaviour now requires user login with authentication tokens.
• Safe configuration management: Changing sensor configuration now requires login and a disabled device. The end user can verify that the configuration matches requirements. New resources: `config/report/v1`, `config/activate/v1`, `config/crc/v1`.
• Reboot resource: Added `reboot/v1` command to the ADAR API for device restart via the CoAP protocol. This also enables the restart button in ADAR Designer.

Changed

• Improved detection near the sensor: Detection performance in the region close to the sensor (the first ~40 cm) has been improved compared to the limitations documented in `v1.1.0`. In particular, this region no longer needs to be empty when the device boots up or when the transmission code is switched.
• Improved handling of weak objects near strong reflectors: Tuning improvements reduce false negatives when weak scattering objects are located close to strong reflectors.
• Distance to floor default: Increased the default value for distance to floor from 0.2 m to 4 m.
• Safe input debouncing: Changes on safe input lines must now be stable for 5 ms before the new zone takes effect.
• Recovery after panic: After a panic, the device now performs a cold reboot and resumes operation instead of remaining in a panicked state.
• Performance optimizations: Various signal processing optimizations.

Fixed

• Fixed a bug in interference detection.
• Fixed CoAP state resource returning incorrect response code.
• Fixed a bug that disrupted the factory reset LED indication.

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[v1.1.1] 2025-11-3

Added

• Processing that merges false detections in front of and behind a strong reflector.
• Hostname support (set to adar-<serial-number>, e.g. adar-123). Can be used as an alternative to IP address on many modern networks.
• Support for hardware version 1.3 (backward compatible with older version hardware).

Changed

• The ADAR device will no longer remove network observers that time out. When the observer list is full, existing observers are replaced with the following priority: first,  observer with the same IP address; next, the most recently added observer.

Fixed

• Improved signal processing.
• Network stability improvements.

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[v1.1.0] 2025‑09‑19

Added

• Algorithms for detecting objects in close-range (0 cm - ~5 cm) and medium-range (~5 cm - 40 cm). For optimal performance, these areas must be empty when the device boots up and if you switch transmission code.
• Objects in close-range can not be accurately positioned. The device will instead report that it is being obstructed.
• Objects in medium-range will be positioned.
• Algorithm that improves angular accuracy across different temperatures.
• Additional device states: DISABLED and CONFIG. Using these is not required yet.
• Automatic reboot if Ethernet communication freezes.

Changed

• Various optimizations and performance improvements. The highest frame rate is increased from 10 Hz to 18 Hz.

Fixed

• Corrected bug so that we now allow multiple sync servers.
• Bug that caused CoAP transfers of large pointclouds to not time out properly.
• Bug where the CoAP-server did not accept retransmission attempts during block-wise transfers.
• General improvements and bugfixes

Known limitations

• Ethernet communication can in rare cirumstances freeze. As a temporary workaround, the device will automatically reboot if communication freezes. Under normal traffic load, this event is expected to occur seldom and infrequently.
• There is still a small blindspot within the medium-range volume (~5 cm - 40 cm) caused by the transmitter itself being detected, and having to be explicitly ignored. These detections may appear as false positives (outside of this blind-spot) in certain conditions. In previous firmware versions the entire close- and medium-range volumes were blind. See the ADAR User Manual for more information.
• If a very strong acoustically reflective object enters the medium-range volume (~5 cm - 40 cm) the ADAR sensor may experience a drop in frame rate.

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[v1.0.1] 2025‑07‑04

Fixed

• Exclusion zones that extend to +/- 90 degrees always excludes points on this edge.

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[v1.0.0] 2025‑07‑04

• Initial ADAR firmware release.

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