int ultraSoundSignalPins[] = {0,1}; // 2 Ultrasound signal pins int ultraSoundTriggerPin = 6; // output pin to start Ultrasound signals int pwm_a = 3; int pwm_b = 11; int dir_a = 12; int dir_b = 13; unsigned char analogPin = 0; void setup() { Serial.begin(9600); for(int i=0; i < 2; i++) { …

somebody can tell the mean.

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