DESCRIPTION
This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9V to 5.5V 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 30mm.
These reflectance sensors feature a linear array of IR emitter/phototransistor pair modules in a high-density (4mm pitch) or medium-density (8mm pitch) arrangement, which makes them well suited for applications that require the detection of changes in reflectivity. This change in reflectivity can be due to a colour change at a fixed distance, such as when sensing a black line on a white background, as well as due to a change in the distance to or presence of an object in front of the sensor. A variety of sensor counts and densities is available so you can pick the ideal arrangement for your application. Since the outputs are all independent, you can connect just some of the channels to attain an irregular or non-standard sensor spacing.
These units have integrated LED drivers that provide brightness control independent of the supply voltage, which can be anywhere from 2.9V to 5.5V, while enabling optional dimming to any of 32 possible brightness settings. For high-density (HD) modules with five or more sensors, there are separate controls for the odd-numbered and even-numbered LEDs, which gives you extra options for detecting light reflected at various angles.
Please Note:
- This QTRX version features higher-performance sensor modules with lenses, which allow high performance at a much lower IR LED current.
FEATURES
- Dimensions: 29mm × 20.0mm × 3.0mm
- Operating voltage: 2.9V to 5.5V
- Sensor type: QTRX
- Sensor count: 4
- Sensor pitch: 8mm
- Full-brightness LED current: 3.5mA (independent of supply voltage)
- Output type: RC (measurable by digital I/O)
- Optimal sensing distance: 10mm
- Maximum recommended sensing distance: 40mm
- Weight: 1.5g
RESOURCES
Schematic diagrams of the QTR/QTRX-HD Reflectance Sensor Arrays
Dimension diagrams of the QTR/QTRX Reflectance Sensor Arrays
Drill drawings (DXF) for the QTR/QTRX Reflectance Sensor Arrays
Arduino Libraries
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Note: Orders with multiple items will have a distinct processing period for each item.
We will thoroughly inspect all items before sending. The majority of orders will be shipped within 48 hours. Delivery is expected to take between three and seven days.
Returns
The inventory is always changing and we are unable to control it completely because several parties are involved, including our factory and warehouse. Stocks can be changed at any moment. It is possible that stock may run out after your order has been placed.
The policy is for 30 days. If 30 days have gone without a trace since the purchase, unfortunately we can't offer an exchange or refund.
The item should not be used, and it must be in its original condition. It should also be returned in its original packaging.
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