From Taramani/ Velachery/ Main gate: Take the campus bus and get down at the HSB bus stop. The buses run every 15 minutes.
From Ginger Hotel / Mandakini gate: The Taramani bus stop is a short walk from the Ginger Hotel/Mandakini gate. The Taramani bus stop can be reached via the bridge that connects IITM Research park to the IITM campus (route marked below). Take the campus bus from the bus stop and get down at the HSB bus stop