Process

Describe the process you underwent to reach the outcome (problems encountered, how you resolved them, as well as, experiments, hacks, tests, refinements, iterations, failures)

Firstly, I was not familiar with the syntax used in Particle, so I searched "for loop" in Particle Docs and found a syntax reference: https://docs.particle.io/reference/device-os/api/language-syntax/control-structures/#for. This was very helpful as it included all basic syntax like if-else condition, operators, loops, and etc.

When I tested my code for version 1 (blinking 3 times before LED on/off), it only blinked once. Then I realized that I did not put delay(500) at the end of the for loop, so the LED was quickly turned off and back on that human eyes could not notice.