RoboMasters the Animated Series

Both series tells the story about a group of college student joining the robot club. They told the hardship and the teamwork to complete a robot which rejected by other people. If you like atom the beginning you can try robomaster but i warn you to not have a high expectation of it.  

Groups of people chilling (but not really), learning about teamwork, and building mechs. RoboMasters is set in university and is based on the irl competition RoboMasters. Classroom Crisis is set in the future with space drag races, big bucks, and big dramatic plots. CC is grander in scale whereas RoboMasters is essentially a down to Earth school club show with cute little robos. Neither are life-changing masterpieces and neither stands out much over the other execution-wise, both are enjoyable but underwatched. If you liked one, give the other a try. 

They both show a group of people building Robots with teamwork and hardwork! Robomaster is more realistic and it's based on the real-life Robomaster championship Robotics;notes is more fantasy like building a giant Gundam, but it's very good and you will get the spirit of it!