Wildcards is a fun, easy, and inexpensive way for beginners to learn about robotics, circuits, and engineering. Each kit contains contains a Wildcards Board (with built in LEDs, push buttons, a buzzer, and 4 connectors), a servo motor, a vibration motor, a rotary knob, a light sensor, a sound sensor, and 3 alligator cables so you can turn almost anything into a button.