Minigyro Chamber is a room in Sanctuary Fortress from Metroid Prime 2: Echoes.
On either side is a glass-windowed room with a Morph Ball tunnel that Samus can enter. In the center of the room is a large power-producing set of Gyroscopic Rings.
During her first visit, she must solve a simple puzzle by using Bomb Slots to stop the gyro from spinning around and settle to form a straight path for her Morph Ball to cross. There are 3 Harmony Class Drones in the room that attack her while she traverses the passage.
The gyroscopic system offline