8x Reflective Proximity Sensor Board, Line Obstacle Finder

Description Board Features: Very suitable for robot project, to scan and follow on floor line. On board 8 reflective proximity  sensors, typicall could connect to arduino A0-A7 Default 5V power, connect jumper to use 3.3V power Can use QTRSensors library, or simply read all analog input. Each sensor distance is 8.5mm, total sensing length is 8.5 * 7 = 59.5 mm Customizable for longer range.