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IR sensor value

Hello everyone! I'm new here, so forgive me if I can not explain it properly. I'm doing a project with Arduino and Raspberry Pi 2 Model B and what I need is to send the value returned by the Makeblock IR sensor(if sensor1 or sensor2 is inside the black line) to finally move the motors. All this code, I need to do with ROS. And I do not know what kind of sensor_msgs I need. (I know that it is not Range.h or Image.h) Thanks anyway!