QTR-MD-03RC Reflectance Sensor Array: 3-Channel, 8mm Pitch, RC Output

Pololu item #: 4143
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 3.51
5 3.23
25 2.97


backorders allowed

pitch × sensors size
(mm)
output max current optimal
range
LED board
8 mm × 3 21.0 × 20.0 RC (digital) 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 30 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 Select variant…

 Description Specs (15) Pictures (7) Resources (6) FAQs (0) On the blog (0) 

Dimensions

Size: 21.0 × 20.0 × 2.5 mm
Weight: 1.1 g

General specifications

Maximum range: 30 mm
Optimal range: 5 mm
Minimum operating voltage: 2.9 V
Maximum operating voltage: 5.5 V
LED current: 30 mA1
Peak wavelength: 940 nm
Maximum current draw: 62 mA2
Sensor type: QTR
Sensor pitch: 8.0 mm
Sensor count: 3
Output type: RC (measurable by digital I/O)

Identifying markings

PCB dev codes: irs25a3
Other PCB markings: 0J113613

Notes:

1
Can be dynamically reduced to any of 32 available dimming levels.
2
With all LEDs on at max brightness setting.
3
Note: this does not differentiate between the A and RC output types.

Related Categories

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