what is a serial monitor

Here is the hardware list:
  • Arduino Board
  • Breadboard
  • 3 LEDs (all different colors)
  • 3 Resistors (220 ohms)
  • USB Cable
  • Jumper Wires
The serial monitor is the 'tether' between the computer and your Arduino - it lets you send and receive text messages, handy for debugging and also controlling the Arduino from a keyboard! For example, you will be able to send commands from your computer to turn on LEDs.

keentween