This design describes a solution compatible with T12 soldering station, using STM32 Soldering Station Firmware. Let me thank to David, who takes care of the project and does a really great job! Thanks also to Michal Polak (NuClear), who supported me from 3D printing point of view, and provided me with bi-color and structured plastic components.

The 3D model available for box below supports the PARKSIDE battery (X20V series) adapter as well, which allows work without power cord and therefore it is practical in the field. This was, by the way, the reason for this project.

In the following pictures and links, you can see and download all the important documents and supportive files ...

Schematics:

Layout:

Bill of materials: T12_Driver_v21S_BOM.pdf

Gerber files for controller: T12_Driver_v21S_Gerber.zip

The appropriate FASTON connectors, suitable for battery terminals are marked as CT103:

CT103 dimensions:

They are available for example here. These connectors are soldered into the small board "Parkside battery adapter" ... Gerber files for this PCB: T12_Parkside_Adapter_Gerber.zip

Files for 3D print: T12_Soldering_station.STL

I tested the station successfully, and it works as expected.