The sensor consists of IR LED and receiver in the form of phototransistor. In addition to these two basic elements, in the circuit are: resistor limiting the transmitting LED's current 220 Ω and the pulling-up resistor, output of the phototransistor collector for supply voltage with the value of 20 kΩ. The output is an analog voltage that depends on the color of the surface. The array below presents other examples of values depending on the distance and color of the surface.
|Distance||White surface||Black insulating tape|
|6 mm||0.2 V||3.8 V|
|25 mm||2.4 V||3.5 V|
The product is compatible with Arduino
The manufacturer has prepared a library that simplifies maintenance of the sensor for Arduino users.
|Daylight, especially sunlight can affect the operation of the sensor. In the case when the output voltage is too low, you should install a rim that protects the sensor from the exposure to external light.|
The sensor has three simple pins: power supply - VDD (supply voltage), ground - GND and the analog output signal OUT. For proper operation, it is sufficient to connect the power supply.
STM32F407G-DISC1 - Discovery - STM32F4DISCOVERY* - 109,90 zł
Arduino Uno Rev3 - module A000066* - 92,00 zł
Arduino Mega 2560 Rev3 - module A000067* - 159,00 zł
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