New Pioreactor release: 23.4.28

As the software becomes more stable, we’ll be slowing down releases to closer to monthly cycles. Important bug fixes will always be prioritized however.


  • improved detection of under-voltage, and power supply problems.
  • pumps will halt if a MQTT disconnect occurs. This is to prevent the edge case when pumps are running on a worker, but not controllable from the UI due to an MQTT disconnect.
  • improvements to backing up the SQLite3 database.
  • improvements to self-test “Reference photodiode is correct magnitude”

Bug fixes

  • fix bug in pio run od_calibration list


In your Pioreactor UI, visit Updates in the left sidebar.

and click on “Update to latest release” in the top right corner:

Problems? Let me know here or at