Welcome, @MvonSchalbe, to the community!
Are you aware that the DISCOVERY kits, like all other development platforms from STMicroelectronics, may not be used for end products?
The Evaluation Board offers limited features and is conceived to be used only to evaluate and test ST products in a research and development setting.
The Evaluation Board shall not be, in any case, directly or indirectly assembled as a part in any production of Yours as it is solely developed to serve evaluation and testing purposes and has no direct function and is not a finished product.
If the Evaluation Board is incorporated in an evaluation system, the evaluation system may be used by You solely for Your evaluation and testing purposes. Such evaluation system may not be offered for sale or lease or sold, leased or otherwise distributed for commercial purposes and must be accompanied by a conspicuous notice as follows: “This device is not, and may not be, offered for sale or lease, or sold or leased or otherwise distributed for commercial purposes�?.