6 Robots You Can Build in 2026

A beginner-to-advanced robotics roadmap covering six progressively complex robot builds: a line follower, obstacle-avoiding robot, ball-tracking robot, machine learning LiDAR robot using a random forest classifier on Arduino, a robotic arm with teleoperation and vision-language-action models, and a 12-servo spiderbot trained via reinforcement learning in simulation. Each project introduces new hardware and software concepts, from basic Arduino programming and PWM control to Python-based ML training, URDF simulation in Isaac Sim, and sim-to-real transfer.