Venue:
Technische Universität Dortmund
Restaurant Calla (Hauptmensa)
Vogelpothsweg 85
44227 Dortmund
Travel:
From Dortmund main station take the S1 in the direction of Solingen and leave the train after three stops at "Dortmund Universität". The S1 is running every 20 minutes and it takes the approximately 7 minutes to get to the workshop venue.
More infomation: https://www.vrr.de/de/