Let's say your Boe-Bot is attempting to navigate terrain with hills and valleys. Depending on how steep the hills are, the Boe-Bot may need to detect whether or not it is about to roll back down the hill. As part of a contest, the Boe-Bot may need to find the top of the hill (or the bottom of a valley) faster than its competitors. The Memsic MX2125 Dual-Axis Accelerometer makes all this and more possible, and this activity will show you how.