.. _changelog_ide_v2_6_0:

v2.6.0
======

v2.6.0 adds an **Edge Impulse uploader** for sending labeled datasets straight
from the Dataset Editor, brings up Arduino Portenta H7 board support, and
migrates the bundled machine-learning workflow from the legacy CMSIS-NN models
to TensorFlow Lite. This release stays on the Qt Creator 4.0.2 base used by the
prior 2.x releases. It contains one user-visible workflow break: the old
CMSIS-NN ``.network`` models and their ``nn_*`` examples have been removed and
the MobileNet models have moved.

.. contents:: On this page
   :backlinks: none
   :local:
   :depth: 1

Highlights
----------

- **Edge Impulse uploader** lets you log into your Edge Impulse account, pick
  a project, choose a train/test split, and upload the open dataset directly
  from the ``Dataset Editor``.
- **Arduino Portenta H7** (STM32H747) is now a supported board with bundled
  firmware, bootloader, and UVC images.
- **TensorFlow Lite migration** replaces the legacy CMSIS-NN neural-network
  models and ``nn_*`` examples with the TensorFlow Lite workflow.
- **New ML examples** add TensorFlow Lite face data collection and on-device
  face recognition.
- **Bundled firmware** updated from 3.6.4 to 3.6.7 for all boards.

New features
------------

- **Edge Impulse uploader.** Added an uploader that logs into your Edge
  Impulse account, lets you pick a project and a train/test split, and uploads
  the open dataset directly from the ``Dataset Editor`` (or by API key) as
  signed JPEG ingestion samples. The JWT/API key is stored in ``QSettings``
  (`8a828b45b <https://github.com/openmv/qt-creator/commit/8a828b45b>`__,
  `fa86179a7 <https://github.com/openmv/qt-creator/commit/fa86179a7>`__,
  `ca9183864 <https://github.com/openmv/qt-creator/commit/ca9183864>`__,
  `a267de659 <https://github.com/openmv/qt-creator/commit/a267de659>`__).
- **TensorFlow Lite face examples.** Added ``tf_face_collection.py`` and
  ``tf_face_recognition.py`` under ``25-Machine-Learning`` for face data
  collection and on-device face recognition/classification
  (`fb2d2cbb9 <https://github.com/openmv/qt-creator/commit/fb2d2cbb9>`__).
- **Readout-Control example.** Added an ``apriltag_tracking.py`` example under
  ``35-Readout-Control`` demonstrating high-speed AprilTag tracking by moving a
  small sensor readout window on the OpenMV Cam H7 Plus (OV5640)
  (`0c6ce1a82 <https://github.com/openmv/qt-creator/commit/0c6ce1a82>`__).

Other changes and improvements
------------------------------

- Replaced the legacy CMSIS-NN neural-network models and ``nn_*`` examples with
  the TensorFlow Lite workflow, and relocated the bundled MobileNet models from
  ``share/qtcreator/models/tensorflow/mobilenet`` to
  ``share/qtcreator/models/mobilenet``
  (`0c6ce1a82 <https://github.com/openmv/qt-creator/commit/0c6ce1a82>`__).

Bug fixes
---------

- Fixed the ``Dataset Editor`` holding a lock on a closed dataset folder by
  rebuilding the file-system model when the folder is closed, and delayed
  window-state restore so the file-system watcher initializes correctly
  (`af9fb441b <https://github.com/openmv/qt-creator/commit/af9fb441b>`__).
- Fixed the dataset export menu so the single ``Export Dataset to Zip File``
  action works correctly by removing the dead duplicate export entry, and
  corrected error-dialog/progress ordering on export failure
  (`ca9183864 <https://github.com/openmv/qt-creator/commit/ca9183864>`__).
- Fixed the Linux ``.png`` application icon not being produced in the release
  build (`a55dd4c1b <https://github.com/openmv/qt-creator/commit/a55dd4c1b>`__).

Platform and tool support
-------------------------

- **Qt Creator base:** 4.0.2.
- **New board:** Arduino Portenta H7 (STM32H747), with bundled
  firmware/bootloader/UVC images
  (`54f4d565b <https://github.com/openmv/qt-creator/commit/54f4d565b>`__).
- **Bundled OpenMV firmware:** updated from 3.6.4 to 3.6.7 for OPENMV2/M4,
  OPENMV3/M7, OPENMV4/H7, OPENMV4P/H7 Plus, and PORTENTA
  (`54f4d565b <https://github.com/openmv/qt-creator/commit/54f4d565b>`__,
  `fb2d2cbb9 <https://github.com/openmv/qt-creator/commit/fb2d2cbb9>`__,
  `4bb1cf8d5 <https://github.com/openmv/qt-creator/commit/4bb1cf8d5>`__).

Breaking changes
----------------

The bundled CMSIS-NN/legacy neural-network models (``cifar10``,
``cifar10_fast``, ``lenet``, ``smile``, ``chars74k`` ``.network`` files) and
their ``nn_*`` example scripts have been removed in favor of the TensorFlow
Lite workflow. The MobileNet models have moved from
``share/qtcreator/models/tensorflow/mobilenet`` to
``share/qtcreator/models/mobilenet``. Scripts or projects that reference the old
CMSIS-NN models or the old MobileNet path will no longer find them; migrate to
the TensorFlow Lite workflow or update the model path accordingly.