![robotc ultrasonic sensor robotc ultrasonic sensor](http://www.cs.csi.cuny.edu/~imberman/csc126/ROBOLABnxt_files/image044.jpg)
However, if either obst1 or obst2 is greater than 40, the robot will consider that parking spot to be free.
![robotc ultrasonic sensor robotc ultrasonic sensor](https://i.ytimg.com/vi/q6VPn1Ylz8Y/maxresdefault.jpg)
#Robotc ultrasonic sensor free
![robotc ultrasonic sensor robotc ultrasonic sensor](http://2.bp.blogspot.com/-yhyqqIg0qrA/UyqF00_AyBI/AAAAAAAAAQQ/gEoezinMECU/s3200/Screen+Shot+2014-03-20+at+2.09.12+PM.png)
To solve this issue, we decided to build an EV3 Lego robot that could shovel snow in a parking lot and park itself in an open spot afterwards. This issue is particularly prevalent in parking lots, as many people exit their vehicles and walk away. When people are getting in or out of their car, they can slip and fall, resulting in significant injury, making this a substantial safety concern. LEGO EV3 Color Detecting and Self-Parking RobotÄuring the winter, the roads can quickly become slippery due to snow and ice.