DESCRIPTION
When the IR Obstacle Sensor detects an obstacle, the green indicator on board lights up, giving a low-level output signal in the OUT pin. The module detects distance of 2 - 30cm, with a detection angle of 35°. Detection distance can be adjusted with the on board potentiometer.
The IR Obstacle Sensor uses active infrared sensors to detect the reflected beam, and is dependent on the shape of the reflected target. The least effective colour is black, and most effective is white.
For the model with 2 potentiometers, the potentiometer next to the GND pin is used to adjust the frequency of the 555 timer and is set to approximately 38 kHz from the factory and shouldn’t be readjusted unless you have a scope or frequency counter to calibrate the frequency. The other potentiometer allows for adjustment of the duty cycle of the 555 timer. This affects the brightness of the IR LED and it can be fiddled with to try to change the distance at which objects are detected.
TECHNICAL DETAILS
- Input Voltage: 3.3 - 5V
- Detection Distance: 2 - 30cm, 2 -40cm
- Detection Angle: 35°
SHIPPING LIST
- 1x IR Obstacle Sensor