An array of sensors detects the color of each marble ... Color sensing (as well as detecting empty spaces) settled on IR-based sensors commonly used in line-following robots.

The zForce sensors are essentially an array of IR lasers and photodiodes with some ... When I put this one sensor stick back together, an area near the custom ASIC gets hot. Sacrificed for my ...

An IR sensor is located near the TV and wired to the receiver, which can be many feet away in the equipment rack. The receiver has an amplifier and an "IR blaster" that showers IR signals to all ...