Digital Distance Sensor 300cm PWM - Pololu 4079

Index: PLL-19810 EAN: 5904422349097
Digital Distance Sensor 300cm PWM - Pololu 4079
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Digital lidar distance sensor - range:
Manufacturer: Pololu

Product description: Digital distance sensor 300 cm PWM - Pololu 4079

Module equipped withdistancesensor based onLidartechnology. Module equipped with distance sensor based onLidartechnology. The sensor detects objectsup to 130 cmand is poweredfrom 3 V to 5.5 V. The board is equipped with one PWM digital output whose signal is similar to the servo control signal. The digital pin of the microcontroller can be used to measure the duration of each high pulse, which encodes the measured distance. Short range Lidar technology is used toaccurately measurethe time it takes for the emitted pulses of eye-safe infrared light to reach the nearest object and be reflected back. During sensor operation, continuous distance measurements are taken and ranges are coded as high pulse widths, which can then be synchronized by a microcontroller using a single digital input. A maximum range of 300 cm is only achievable for high reflectance targets in good environmental conditions. Targets with lower reflectivity or poor environmental conditions reduce the maximum range.

The manufacturer has also preparedsampleprogramcodesfor Arduino andBBC micro:bit.
Czujnik odległości

Infrared light emitted by the sensor, recorded with a camera without IR filter.
Cyfrowy czujnik odległości

Digital distance sensor 300 cm.

Using the distance sensor

The sensor is equipped with 3 leads:VIN, GND and OUT,in the form of holes with a raster of 2.54 mm, with the possibility of solderinggoldpin connectors(not included). VIN pin should be provided with voltagefrom 3V to 5.5V.GND is a ground pin (0 V). Digital pulses are sent to the OUT pin. The low level of the pulses is 0 V and the high level is the voltage value from VIN. When an object is detected,a redLEDalso lights up, which glows brighter when the object is closer to the sensor.There is also an ENABLE pin on the board that can be set low to put it into a low power state, which consumes about 0.4 mA of current. The ENABLE pin is pulled up to VIN by default.

There is a protective film on the sensor that must be removed before working with the module.

Jumper settings on the sensor module

Four surface mount configuration jumpers (4321) are included on the board to define its operating modes. Different versions of Pololu sensors have jumpers set appropriately in the form of 0 Ω resistors. The resistors can be soldered out or bridges can be added to convert one version of the sensor into another. This sensor can be converted to any other version of irs17a according to the table below.

Ustawienie zworek w module
Pin and jumper layout of the distance sensor module.
Product Description Range max. Hysteresis Distribution Minimum update frequency Jumper settings (4321)
#4066 Digital output, 25 cm 25 cm 50 mm - 100 Hz 0000
#4067 Digital output, 50 cm 50 cm 50 mm - 100 Hz 0001
Digital output, 75 cm 75 cm 50 mm - 100 Hz 0010
#4069 Digital output, 100 cm 100 cm 50 mm - 100 Hz 0011
Digital output, any detection ~130 cm - - 100 Hz 0010
#4071 PWM output, max. 130 cm ~130 cm - 1 mm (- 0.5 µs) 100 Hz (max. 110 Hz) 0101
Digital output, 125 cm 125 cm 50 mm - 30 Hz 1000
Digital output, 150 cm 150 cm 50 mm - 30 Hz 1001
Digital output, 175 cm 175 cm 50 mm - 30 Hz 1010
#4077 Digital output, 200 cm 200 cm 50 mm - 30 Hz 1011
Digital output, any detection ~300 cm - - 30 Hz 1100
#4079 PWM output, max. 300 cm ~300 cm - 2 mm (= 0.5 µs) 30 Hz (max. 33 Hz) 1101
Czujnik Pololu vs SharpComparison of Pololu and Sharp sensors.

Comparison with Sharp sensor

The Pololu sensor modules have the sameshape and pin-outsasthe Sharp modules. They are available with the same and larger detection ranges, which means that they can be usedinterchangeably. The sensors in the newer Pololu devices aremuch thinnerthan the Sharp modules, so the zero point is about 7mm closer to the board, and the beam angle is wider in the newer devices.

Pololu distance sensor specifications

  • Supply voltage: 3 V to 5.5 V
  • Current consumption: 30 mA (typical) when switched on, 0.4 mA when switched off
  • Maximum range: 300 cm
  • Minimum range: up to 1 mm
  • Minimum update rate: 30 Hz to 33 Hz (33 ms to 30 ms period)
  • Field of View (FOV): typically 15°, may vary depending on object reflection and environmental conditions
  • Output Type: PWM
  • Dimensions: 21.6 x 8.9 x 3.5 mm
  • Weight: 0.4 g
Schemat sygnału wyjściowegoOutput signal diagram.
Voltage to 3.0 V
Voltage from 5.5 V
Interface Digital I / O
Sensor - distance to 300 cm
Sensor - distance from 0.1 cm
Package width 7.8 cm
Package height 8.6 cm
Package depth 0.2 cm
Package weight 0.002 kg

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