4TH DAY

It´s the 4th day and everybody is thinking of last day´s sumo battle, but before it we had to learn some new things. We´ve introduced a new sensor, the ultrasonic one, that detectes objects, like the bats

We had to program the robot to see some boxes and stop at the time he sees them, it was very easy, but after it we had to the same but backwards that was a bit harder but still easy. Then, we made a ``sumo battle´´ but you have to push some bottles outside the ring. In the end of the morning we finished building our robot and I programmed it.