+ const unsigned int
+ left_ping_time = ping(left_trigger_pin, left_echo_pin),
+ right_ping_time = ping(right_trigger_pin, right_echo_pin);
+ const unsigned int
+ left_led_value = map(left_ping_time, 0, 3000, 0, 255),
+ right_led_value = map(right_ping_time, 0, 3000, 0, 255);
+ analogWrite(left_led_pin, left_led_value);
+ analogWrite(right_led_pin, right_led_value);
+