QTR-MD-04RC Reflectance Sensor Array: 4-Channel, 8mm Pitch, RC Output

The Pololu QTR-MD-04RC Reflectance Sensor Array is a 4-channel sensor with an 8mm pitch and RC output. It is compact in size, measuring just 29.0mm x 20.0mm. This sensor array is designed to detect changes in reflectance with precision, making it ideal for tasks like line detection. It can operate from a voltage range of 2.9V to 5.5V, and has a maximum current capacity of 30mA for the LED and 62mA for the board. The optimal range for this sensor array is 5mm.

One of the key features of the Pololu QTR-MD-04RC Reflectance Sensor Array is its array of IR LED/phototransistor pairs. These pairs are designed to detect changes in reflectance with high precision. This makes the sensor array particularly useful in applications where precise detection of changes in reflectance is crucial, such as in robotics or automation systems.

Another significant benefit of this sensor array is its dimmable brightness control. This feature allows you to adjust the brightness of the LEDs independently of the supply voltage. This can be particularly useful in situations where the ambient lighting conditions vary, as it allows you to ensure that the sensor array is always operating at its optimal brightness.

The Pololu QTR-MD-04RC Reflectance Sensor Array is also designed to offer a high contrast between light and dark readings. This means that the closer the object is to the sensor, the higher the contrast. However, it's also designed to detect high-reflectance objects at a distance of up to 40mm. This version of the sensor array features the traditional-style QTR sensors without lenses, offering a straightforward and effective solution for your reflectance detection needs.