Pololu QTRX-HD-31RC Reflectance Sensor Array: 31-Channel, 4mm Pitch, RC Output, Low Current

The Pololu QTRX-HD-31RC Reflectance Sensor Array is a high-performance, low-current device with 31 channels, each with a 4mm pitch. It measures 125.0mm x 16.5mm and operates on a digital RC output. The maximum current for the LED is 3.5mA and for the board, it's 68mA. The optimal range for the sensor array is 10mm. Equipped with an array of IR LED/phototransistor pairs, the QTRX-HD-31RC is perfect for accurately detecting changes in reflectance. This makes it particularly useful for applications such as line detection. The sensor array functions within a voltage range of 2.9V to 5.5V.One of the standout features of this sensor array is its dimmable brightness control. This control is independent of the supply voltage, allowing you to adjust the brightness level to suit your specific needs. Additionally, it provides separate controls for the odd and even emitters, adding to its versatility and adaptability.With the QTRX-HD-31RC, the closer the object, the higher the contrast between light and dark readings. However, it's worth noting that high-reflectance objects can generally be detected at distances of up to around 50mm. This sensor array features high-performance QTRX sensors with lenses, ensuring precise and accurate readings every time.