LED

A LED is Light Emitting Diode. It’s a piece of electronics that contains a crystal that generates light under a current. Watch out, it only allows current to flow one way and blocks it the other way. An LED can be easily destroyed by high currents so it is recommended to mount it in series with a 200Ω (Ohm) resistor.

Want to deep dive? Read the SparkFun LED guide or watch Adabot from Adafruit.

The 200Ω resitors has 2 red lines and 1 black line. You can find tons of apps online that will help you compute this value based on the colors.

A LED module

Make

Watch the YouTube movie tutorial

A LED module

A LED module

A LED module

A LED module

A LED module

A LED module