Pololu QTRX-HD-05RC Reflectance Sensor Array: 5-Channel, 4mm Pitch, RC Output, Low Current

The QTRX-HD-05RC Reflectance Sensor Array is a compact, high-performance device featuring 5 sensors with a 4mm pitch. The dimensions of the array are 21.0mm x 20.0mm. It utilizes RC (digital) output and consumes a maximum current of 3.5mA for the LED and 14mA for the board. The optimal range of detection is 10mm. This sensor array is powered by an operational voltage range of 2.9V to 5.5V. It is equipped with IR LED/phototransistor pairs, making it an excellent tool for identifying changes in reflectance such as line detection. The array offers dimmable brightness control independent of the supply voltage and separate controls for the odd and even emitters.The QTRX-HD-05RC Reflectance Sensor Array is designed to provide high contrast between light and dark readings, which increases with the proximity of the object. However, it is capable of detecting high-reflectance objects at a distance of up to 40mm. The low-current QTRX sensors with lenses enhance the performance of the array, making it an ideal choice for various applications requiring precise reflectance detection.The unique properties of this sensor array, such as its compact size, low current consumption, and high-performance sensors, make it an efficient and reliable tool for robotics and automation projects. Its ability to detect changes in reflectance with high precision can be beneficial in applications such as line-following robots, edge detection for table-top robots, and obstacle detection and avoidance.