Create a simple Codecraft Arduino program (sketch) that turns on the LED light.
(Re-create this program -->)
Click on the "Start" menu
Drag the "Setup Loop" block to the right and drop it on the canvas
Click on the "Grove Digital" menu
Drag the "LED pin" block and drop it inside the "Loop" block you just placed on the canvas
In the LED pin block, change the LED pin to D13
Click on the "Control" menu
Drag the "Delay ms" block under the "LEN pin" block
Be sure to select "Delay ms" (milliseconds) and not "Delay us" (microseconds!
Duplicate the LED and Delay blocks
Click Upload
Select the serial port (there should be just one) and click OK
After you get the "Upload succesfully " message, the LED on your Arduino board should be blinking.
Change the LED blink rate by using different delay numbers.
Send an "SOS" message by blinking this pattern of long and short blinks:
fast - fast - fast (pause)
slow - slow -slow (pause)
fast - fast - fast (pause)