First, we will need the Galileo board. Again, all the projects in this book utilize the Galileo board Gen 2.
We will use two actuators: a relay module and a servomotor. The relay module used in this project is a Pololu 5V single-pole, double-throw (SPDT) relay. The module already includes a basic carrier PCB, terminal blocks for the switch connectors, and a straight male header for the controls.
Meanwhile, the servomotor used is a simple continuous full-rotation servo motor. This servo is rated at 4.8V – 6V. However, you can use any servomotor for this project.
We will also need a potentiometer and a push button to control the actuators. The potentiometer used in this project is a center-tap linear 10k Ohm type. The push button is a single-pole single-throw (SPST) switch rated at 50mA.