It is a pretty common first project to use an Arduino ... approach. Blinking an LED with three resistors and a capacitor. Ok, ok… one of the resistors is a light-dependent resistor, but still.

Messing around with Arduino ... at all (LEDs won't light up or will be too dim, etc). Too much and things probably won't work right and also might short out and create a fire risk. Resistor ...

The proof of the pudding was the modification below of the standard Ardiuno ‘blink ... set the LED on The Arduino Micro is closely related to the Leonardo, with some small difference. Each led in both ...

Individually addressable RGB LEDs at a low price. Just attach an Arduino, load the demo code, and enjoy your blinking lights ... vibrator is set by an external resistor and capacitor, which ...