Control a Stepper motor with Joystick, Arduino and Limit Switches
Control a Stepper Motor using an Arduino, a Joystick and the Easy Driver - Tutorial - YouTube
GSM Pump Motor Controller Circuit using Arduino
High-power control: Arduino
People often searches with Open Source DIY Robotic Arm Kit – factually, this is Arduino like odd way of thought. If you can make a scissor to cut a paper with servo motors following a line – that is a robot.
Learn about controlling a stepper motor with an Arduino http://www.instructables.com/id/Controlling-a-Stepper-Motor-with-an-Arduino https://www.coolcomponents.co.uk/arduino/original-boards
Good diagram of Arduino (or a Raspberry Pi) linked to a solenoid (or electric strike plate) via a MOSFET, with tutorial.
Arduino Stepper Motor Controller Tutorial on www.arduino-board.com
Control a Servo Motor Without Programming.
28BYJ-48 Stepper Motor Control System Based On Arduino With ULN2003 Chip - Open Electronics