2 Breadboards with USB cable

2 Photons

2 – 9V DC power supply/battery pack

2 – Force Sensitive Resistors

2 - LEDs 100 mA

20 – Jumper wires

2 - 100k Ω Resistor

2 - Transistors

2 - Solenoid Actuators

2 - Planet Game Balls (Ping Pong Balls)