Parts List

• Arduino microcontroller
• MakerShield kit
• S1: pushbutton switch
• S2: pushbutton switch
• R1: 1KΩ resistor (brown, black, red stripes)
• R2: 10KΩ potentiometer (for basic AND Logic Gate circuit)
• R2: photocell (for Arduino AND Logic Gate circuit)
• R3: 1KΩ resistor (brown, black, red stripes) for basic AND Logic Gate circuit
• R3: 10KΩ resistor (brown, black, orange stripes) for Arduino AND Logic Gate circuit
• R4: 330Ω resistor (orange, orange, brown stripes)
• LED1: green LED (for Arduino AND Logic Gate circuit)
• LED1: red LED (for basic AND Logic Gate circuit)
• Battery1: 3VDC battery pack
• Figure 6-1. The assembled Arduino AND Logic Gate

TECH NOTE

In digital electronics, a TRUE state is when a data bit is set to 1, or an output pin is set to +5 volts, or a switch is closed. A FALSE state is when a data bit equals 0, or an output pin is set to 0 volts, or a switch is open.