Lesson Guide
Lesson 1: Blinking with the LED
We have completed the output “Hello world” program. Now let’s learn how to light the LED
module. We know the three basic components of a control system: Input, Control, and Output.
But lighting up LED uses only the output, not the input. Seeeduino is the control unit, the LED
module is the output unit and the output signal is a digital signal.
Background Information:
What is Digital Signal
Digital signal: Digital signal refers to the value of the amplitude is discrete, the amplitude is
limited to a finite number of values. In our controller, the digital signal has two states: LOW(0V) for
0; HIGH(5V) for 1. So sending a HIGH signal to LED can light it up.
Components Involved
1. Seeeduino Lotus
2. Grove LED
3. Grove Cable(If Broken out)
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