Pololu QTR-HD-04A Reflectance Sensor Array: 4-Channel, 4mm Pitch, Analog Output

The QTR-HD-04A Reflectance Sensor Array is a 4-channel, 4mm pitch, analog output device. With a size of 17.0 x 20.0mm, this array of infrared LED/phototransistor pairs operates from 2.9V to 5.5V. It features a maximum LED current of 30mA and a maximum board current of 62mA. The optimal range of the sensor array is 5mm. The QTR-HD-04A Reflectance Sensor Array is perfect for accurately identifying changes in reflectance, such as line detection. The sensor array offers dimmable brightness control that is independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings. However, high-reflectance objects are usually detectable out to around 40mm. This product stands out as it features the traditional-style QTR sensors without lenses. This design feature enhances the accuracy and precision of the sensor array, ensuring reliable and consistent readings. The QTR-HD-04A Reflectance Sensor Array is a versatile and dependable choice for a wide range of applications. Whether you're developing a robotics project, creating a security system, or working on a complex automation task, the QTR-HD-04A Reflectance Sensor Array can deliver the performance you need. Experience the benefits of precise reflectance detection and enhance the capabilities of your project with this sensor array.