Wind turbine vs Robot design

The wind turbine project that we completed previously differed a lot from our current project, building a robot. The wind turbine's objective had been to create electric energy efficiently while using wind power while the robots objective is to carry a AA battery to charge each of four electric cars parked in the parking lot. Both of the projects used hubs, axles, and cardboard. None of the items were allowed to be prepackaged in either project and the materials used had to be safe. I'd say the wind turbine project was a lot simpler than the robot project. The robot was more complexed, since we had to program it and create an elaborate code. Scratch was relatively difficult to use because it was somewhat confusing. The wind turbine project wasn't difficult since the only thing we had to do was create the blade shape and test it out until we finally came to an appropriate wind speed. However, for the robot design we weren't able to fully ensure our robot would function properly in the course. Although we didn't have as many prototypes for the robot design as we had for the wind turbine design, it had to be more precised and took longer. Overall, I believe the robot design had been the most intricate project that we've had so far.