QTR-HD-09RC Reflectance Sensor Array: 9-Channel, 4mm Pitch, RC Output

The QTR-HD-09RC Reflectance Sensor Array is a 9-channel, 4mm pitch, RC output device that stands out for its precision in identifying changes in reflectance. This makes it an ideal choice for tasks such as line detection. The sensor array is designed to operate from 2.9V to 5.5V and features a unique dimmable brightness control that operates independently of the supply voltage. Furthermore, it has separate controls for the odd and even emitters.

The QTR-HD-09RC Reflectance Sensor Array is equipped with IR LED/phototransistor pairs, which contribute to its high precision. The closer the object is to the sensor, the higher the contrast between light and dark readings. However, it's worth noting that high-reflectance objects are usually detectable out to around 40mm. This version of the sensor array features the traditional-style QTR sensors without lenses.

With a pitch of 4mm and 9 sensors, the QTR-HD-09RC Reflectance Sensor Array has a size of 37.0mm x 20.0mm. It has a maximum current of 30mA for the LED and 155mA for the board, with an optimal range of 5mm. This compact and efficient design makes it a versatile tool for a variety of applications.

One of the great advantages of the QTR-HD-09RC Reflectance Sensor Array is its ability to detect subtle changes in reflectance. This makes it particularly useful in robotics for line following or edge detection tasks. Its precision and reliability make it a preferred choice for many professionals and hobbyists alike.

Pololu's QTR-HD-09RC Reflectance Sensor Array stands out for its unique features and high performance. Its precision, versatility, and compact design make it a valuable addition to any project requiring precise reflectance detection.