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Nanobot: Atlas is a tiny Lego® compatible robots that are built to fit in the palm of your hand, all at a $25.99 price point. Bigger in comparison to Icarus, Atlas allows for a bigger surface area to play with.
These robots are a great introduction into teaching kids servo rotation and the arduino ide
Atlas includes everything needed to get up and running
Two 180 degree servos
Base robot frame and arm connectors