Your powerful friend, the transistor can control high-voltage motors and lights from a microcontroller pin.
by Alex Glow
If you do not struggle solving 'Towers of Hanoi' just build your own Arduino-powered 3-axis-robot.
A robotic tower crane made out of Lego Technic, Arduino boards, 3D printed parts, off-the-shelf DC gear motors, and addressable RGB LEDs.
by Tart Robotics
This is a miniature robot arm combined with a weighing system that can be used to move objects while knowing the weight of the object.
by Hardi Kurnianto
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