Arduino is programmed to detect digital input from the IR module. As it detects a LOW logical signal from the IR sensor, it starts blinking LED connected at pin 3. When there is a HIGH logical signal from the IR module in the absence of any near approaching object, Arduino keeps the LED connected at pin 3. How the code worksImplementation of an Arduino Obstacle Avoidance Car for Automatic Drawing a Path Map. In sc. Abstract—This study implements an Arduino obstacle avoidance car and provides automatic path map drawing function. The L298N is used as the driving circuit, the PWM output from the Arduino is used for speed control, and the infrared sensor is used to emit infrared rays at a certain frequency to detect obstacles, and the detection signalall s are sent to the Arduino.
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