Opentrons

The 5.0.1 hotfix release contains a small fix to the Labware Position Check to appropriately handle protocols that load pipettes, but never pick up tips with that pipette.

Known Issues

Your last run protocol will not be saved through robot reboots

Version 4.7.0 of the Opentrons App and OT-2 Software is a release focused on stability and behind-the-scenes improvements to our software.

[Technical change log](https://github.com/Opentrons/opentrons/blob/edge/CHANGELOG.md)

Opentrons App

There are no Opentrons App changes for this release.

OT-2 Software

Bug Fixes

- [feat(api,robot-server): upgrade fastapi and pydantic deps ](https://opentrons.atlassian.net/wiki/spaces/RPDO/pages/1041432676/4.7.x+Internal+Release+Notes#Feat(api,robot-server):-upgrade-fastapi-and-pydantic-deps)
- [fix(api): thermocycler error handling ](https://opentrons.atlassian.net/wiki/spaces/RPDO/pages/1041432676/4.7.x+Internal+Release+Notes#Fix(api):-thermocycler-error-handling)
- [revert(robot-server): revert attach pipette code back to using the mount](https://opentrons.atlassian.net/wiki/spaces/RPDO/pages/1041432676/4.7.x+Internal+Release+Notes#revert(robot-server):-revert-attach-pipette-code-back-to-using-the-mount)
- [refactor(api): lock reads to pipettes in the hardware controller](https://opentrons.atlassian.net/wiki/spaces/RPDO/pages/1041432676/4.7.x+Internal+Release+Notes#refactor(api):-lock-reads-to-pipettes-in-the-hardware-controller-8639)
- [fix(robot-server): avoid LabwareDefinition type in cal models](https://opentrons.atlassian.net/wiki/spaces/RPDO/pages/1041432676/4.7.x+Internal+Release+Notes#fix(robot-server):-avoid-LabwareDefinition-type-in-cal-models-8698)

Version 4.6.2 of the Opentrons App and OT-2 Software is a release focused on stability and behind-the-scenes improvements to our software as well as a useful experimental command line utility.

[Technical change log](https://github.com/Opentrons/opentrons/blob/edge/CHANGELOG.md#461-2021-09-28)

Opentrons App

This is a quiet release on the app front as we make some behind-the-scenes improvements to how the app is built, so we don't have any changes to report here.

OT-2 Software

New Features

- The `opentrons_simulate` command-line application can now estimate protocol duration using the `-e` option. This feature is experimental, but very cool!

Bug Fixes

- If a protocol is canceled mid-run while there is a tip on a pipette, the tip will be dropped prior to resetting the plunger to avoid contaminating the pipette internals with liquids.
- Fixed a movement planning issue that could cause multi-channel pipettes to collide with the deck when changing pipettes.
- Fixed an issue that could cause the protocol to proceed before an awaited temperature module target was actually hit.
- Fixed a few issues with the faster protocol analysis method added in the 4.5.0 release.
- Fixed type annotations of the `ProtocolContext` classes.

The 4.6.2 hotfix release contains a small bug fix for an issue where the OT-2's max speed settings within a protocol will be ignored.

The 4.6.1 hotfix release contains a small configuration change to fix an issue with installing the `opentrons` PyPI package on computers running Python 3.8 and later. It does not affect the software running on your OT-2.

Known Issues

In 4.6.2 and previous releases, the OT-2 will only use TLS 1.0 for WPA2 Enterprise association. Some RADIUS servers have disabled this version of TLS; it must be enabled to connect the OT-2 to a RADIUS-secured network.

Since version 4.5.0, if a thermocycler encounters an error, the robot will be unable to recognize the error state. If your thermocycler starts blinking its yellow LED, you should cancel your protocol. See issue [8393][] for more details.

[8393]: https://github.com/Opentrons/opentrons/issues/8393

Version 4.5.0 of the Opentrons App and OT-2 Software is focused on quality-of-life improvements and fixes.

[Technical change log](https://github.com/Opentrons/opentrons/blob/edge/CHANGELOG.md#450-2021-08-03)

Opentrons App

New Features

- Protocol uploads have been made substantially faster! (See OT-2 section below for more details.)

Bug Fixes

- Fixed issues with the run timer reading `00:00` in the middle of a paused protocol ([7740][])

[7740]: https://github.com/Opentrons/opentrons/issues/7740

OT-2 Software

New Features

- The OT-2 now uses a faster analysis method on protocol upload
- Thanks to everyone who beta tested this feature over the last few months!
- You may revert to the old analysis method with the **Use Older Protocol Analysis Method** in your OT-2's advanced settings
- If you encounter any issues (e.g. protocol run errors not caught during upload) please reach out to Opentrons Support or [open an issue][] in GitHub so we can continue to improve this feature

Bug Fixes

- Fixed a regression that prevented use of OT-2 Modules in Jupyter notebook ([8009][])
- Fixed an uncaught import error on macOS and Windows ([8154][], thanks to [Maksim Rakitin][] for the fix!)
- Fixed a crash caused by invalid calibration data ([7962][])

Known Issues

In 4.5.0 and previous releases, the OT-2 will only use TLS 1.0 for WPA2 Enterprise association. Some RADIUS servers have disabled this version of TLS; it must be enabled to connect the OT-2 to a RADIUS-secured network.

[7962]: https://github.com/Opentrons/opentrons/issues/7962
[8009]: https://github.com/Opentrons/opentrons/issues/8009
[8154]: https://github.com/Opentrons/opentrons/issues/8154
[maksim rakitin]: https://github.com/mrakitin
[open an issue]: https://github.com/Opentrons/opentrons/issues