The Pololu QTR-MD-13RC Reflectance Sensor Array is a 13-channel device with an 8mm pitch and RC output. Its dimensions are 101.0mm x 16.5mm, and it operates optimally at a range of 5mm. The device's maximum current for the LED is 30mA, and for the board, it's 220mA.
The QTR-MD-13RC Reflectance Sensor Array is equipped with an array of IR LED/phototransistor pairs, which are perfect for accurately identifying changes in reflectance, such as line detection. It functions within a voltage range of 2.9V to 5.5V and features adjustable brightness control that is independent of the supply voltage. It also provides separate controls for the odd and even emitters.
The closer the object to the sensor, the more contrast there is between light and dark readings. However, objects with high reflectance can generally be detected up to approximately 40mm. This version of the sensor array features the traditional-style QTR sensors without lenses, providing a reliable and efficient solution for various applications.
Whether you're developing a line-following robot or designing a system that relies on precise detection of changes in light reflectance, the Pololu QTR-MD-13RC Reflectance Sensor Array is an excellent choice. Its unique properties and robust performance make it a staple for any project requiring reliable and precise reflectance detection.