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There are two potentiometers on the module one controlling operating frequency
(centered at 38 kHz) the other controlling intensity. The detector was designed for 38 kHz
and the onboard oscillator circuit is based on a 555 timer. Tweaking gives a little better
range but I'd suggest leaving it alone because the useful range is narrow.
Infrared obstacle avoidance sensor is designed for the design of a wheeled robot obstacle
avoidance sensor distance adjustable. This ambient light sensor Adaptable, high precision,
having a pair of infrared transmitter and receiver, transmitter tubes emit a certain frequency
of infrared, When detecting the direction of an obstacle (reflector), the infrared receiver
tube receiver is reflected back, when the indicator is lit, Through the circuit, the signal output
interface output digital signal that can be detected by means of potentiometer knob to
adjust the distance, the effective distance From 2 ~ 40cm, working voltage of 3.3V-5V,
operating oltage range as broad, relatively large fluctuations in the power supply voltage of
the situation Stable condition and still work for a variety of microcontrollers, Arduino
controller, BS2 controller, attached to the robot that Can sense changes in their
surroundings.
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