QTR-HD-04RC Reflectance Sensor Array: 4-Channel, 4mm Pitch, RC Output

The Pololu QTR-HD-04RC Reflectance Sensor Array is a dynamic and versatile tool with a 4-channel, 4mm pitch and RC output. It has a compact size of 17.0mm x 20.0mm, making it easy to integrate into various systems. The array requires a maximum current of 30mA for the LED and 62mA for the board, ensuring efficient energy consumption. It operates optimally within a range of 5mm.

The QTR-HD-04RC is equipped with an array of IR LED/phototransistor pairs, making it an excellent choice for identifying changes in reflectance such as line detection. It operates within a voltage range of 2.9V to 5.5V and features an independent dimmable brightness control, which adjusts according to the supply voltage.

One of the unique properties of this sensor array is its ability to provide higher contrast between light and dark readings the closer the object is. However, it also has the capability to detect high-reflectance objects up to approximately 40mm. This makes it particularly useful in a variety of applications where precise detection and differentiation of objects based on reflectance are required.

This version of the QTR-HD-04RC Reflectance Sensor Array features the traditional-style QTR sensors without lenses. This design choice ensures a more straightforward and reliable operation, making it a popular choice for both hobbyists and professionals alike.

Whether it's for a robotics project, an automated system, or any other application that requires precise and reliable reflectance detection, the Pololu QTR-HD-04RC Reflectance Sensor Array is a top-tier choice that guarantees excellent performance and versatility.