Parts List

• Arduino microcontroller
• MakerShield kit
• R1: 1KΩ resistor (brown, black, red stripes)
• R2: 330Ω resistor (orange, orange, brown stripes)
• PB1: pushbutton switch
• LED1: RGB (red, green, blue) LED
• Long test wire

Figure 15-1. A Logic Tester with an RGB LED