The same travel schedule is valid every 30min. The trains from Zurich are IR36 (leaving at XX:36) or IR16 (leaving at XX:16).
1. Take IR36 train at 08:36, you will arrive to Baden at 08:51 to Gleis 3.
2. In Baden, change to train S27 which leaves at 08:54 from Gleis4 (you will have to quickly walk through the underground to change the “Gleises”). If the train from Zurich is delayed by a few minutes, do not panic, usually, train S27 is waiting, so just be quick.
3. Exit train S27 at the second stop – Siggenthal-Würenlingen.
4. As you exit the train, you will be right at the bus stop. Take bus 357 to "Park Innovaare" – the bus should be there, waiting for people arriving by train S27.
5. Exit the bus at stop "PSI Ost", it will be about 09:13.