foxBMS 2 version 1.4.0 available

2022-07-29 | Documentation, General, Hardware, Software

foxBMS 2 version 1.4.0 available

We are happy to announce that a minor release of foxBMS 2 version 1.4.0 is available on GitHub.

We are proud to announce that foxBMS 2 has been certified as open source hardware by the Open Source Hardware Association under the OSHWA UID DE000128 (for details see https://certification.oshwa.org/de000128.html).

A driver for the NXP monitoring IC MC33775A has been added. The driver measures cell voltages, module voltage and temperatures. Temperatures can be measured by connecting NTCs directly to the input pins or connecting them to a unique input pin via an I2C multiplexer driven by the monitoring IC. The driver can also control cell balancing.

The short log for this release is:

  • foxBMS 2 has been certified as open source hardware by the Open Source Hardware Association (OSHWA UID DE000128).
  • The AFE driver for the NXP monitoring IC MC33775A has been added.
  • The delay between chip select activation and start of SPI transmission and the delay between end of SPI transmission and chip select deactivation have been increased to avoid SPI transmission errors for AFEs.
  • The CAN2 message boxes were not activated within the HALCoGen configuration.
  • The Master hardware has been updated to version v1.1.3.
  • Further unit tests have been added.
  • The Axivion configuration has been improved to ensure style guide conforming source code.

For a detailed list of changes in foxBMS 2 version 1.4.0, please refer to our changelog.

We publish major software releases for our open source BMS platform every 3 to 6 months and interim bug fixes when solved in the News section. By subscribing to the foxBMS Newsletter, you will be informed when the new releases are available. Further, the foxBMS Roadmap and the Documentation are also updated regularly.

Warning: The foxBMS 2 platform including the foxBMS 2 hardware and the foxBMS 2 software are under permanent development. The free and open research and development platform foxBMS 2 as presented in the documentation hereafter is not provided to be used without any adaptions (e.g., to fulfill mandatory regulations) in consumer products, electric vehicles, production environments or any similar usages: the open source version of the foxBMS 2 platform is only intended to be used by skilled professionals trained in designing battery system prototypes.

In case you encounter problems, please contact us.

The Fraunhofer IISB foxBMS Team