QTR-HD-04A Reflectance Sensor Array: 4-Channel, 4mm Pitch, Analog Output
|pitch × sensors||size
|4 mm × 4||17.0 × 20.0||analog||30 mA||62 mA||5 mm|
This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 40 mm. This version features the traditional-style QTR sensors without lenses.
Alternatives available with variations in these parameter(s): sensor type sensor count sensor pitch output type
|Description||Specs (15)||Pictures (7)||Resources (6)||FAQs (0)||On the blog (1)|
QTR-HD-04A Reflectance Sensor Array.
QTR-HD-04A Reflectance Sensor Array, front and back views.
QTR-HD-04A Reflectance Sensor Array dimensions.
Pinout diagram of the QTR-HD-04A Reflectance Sensor Array.
Demo of IR LED dimming and independent even/odd control on the QTR-HD-07x (as seen through an old digital camera that can see IR).
Schematic diagrams of individual QTR sensor channels for A version (left) and RC version (right). This applies only to the newer QTRs with dimmable emitters.
The QTR Reflectance Sensor Arrays are available in many different sizes.