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QTR-MD-04A Reflectance Sensor Array: 4-Channel, 8mm Pitch, Analog Output
| pitch × sensors | size (mm) |
output | max current | optimal range |
|
|---|---|---|---|---|---|
| LED | board | ||||
| 8 mm × 4 | 29.0 × 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 Select variant…
| Description | Specs (15) | Pictures (7) | Resources (6) | FAQs (0) | On the blog (1) | Distributors (12) |
|---|
Dimensions
| Size: | 29.0 × 20.0 × 2.5 mm |
|---|---|
| Weight: | 1.5 g |
General specifications
| Maximum range: | 40 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: | 4 |
| Output type: | A (analog voltages) |
Identifying markings
| PCB dev codes: | irs27a3 |
|---|---|
| Other PCB markings: | 0J113633 |
Notes:
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