Pololu Digital Distance Sensor 5cm
This small lidar-based distance sensor detects the presence of objects within5cm (2″). It has a single digital output that drives low when an object is being detected; otherwise, it is high. It works over an input voltage range of 3.0V to 5.5V, and the 0.1″ pin spacing makes it easy to use with standard solderless breadboards and 0.1″ perfboards.
Please note that this sensor will only tell youifthere is an object within the detection range along its line of sight, not how far away it is. As shown in the diagram above, there is hysteresis at the maximum range threshold to help ensure a clean transition as objects cross the threshold. The sensor can detect objects to within about 5mm of the sensor face.
Unlike simpler optical sensors that use the intensity of reflected light to detect objects, this sensor uses a short-range lidar module to precisely measure how long it takes for emitted pulses of infrared, eye-safe laser light to reach the nearest object and be reflected back. This allows the sensor performance to be largely independent of object reflectivity and ambient lighting conditions (though the range can be reduced for extremely low-reflectance objects).
Some example applications include:
Specifications
Dimensions
| Size: | 0.85″ × 0.35″ × 0.122″ |
|---|---|
| Weight: | 0.4 g |
General specifications
| Maximum range: | 5 cm |
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| Sampling rate: | 145 Hz1 |
| Minimum operating voltage: | 3.0 V |
| Maximum operating voltage: | 5.5 V |
| Supply current: | 30 mA2 |
| Output type: | digital3 |