It is time for mounting an Arduino on the robot base. So that we can wire up the ultrasonic sensor. AS usual, Thingiverse is a good resource to find usable solutions for mounting. One interesting and usable solution is the following:
The Arduino mount is attached with two screws on the robot base. The position is not the best at the moment but it will do the job for the first tries. Two wire it up I used the standard breadboard cable. These should also be replaced after a while, because the connection will not very stable if the robot will move through rough terrain.
Files for printing can also be found in the project repository: