555 Timer (astable mode) 

Using a 555 Timer is a great no-code way to make something happen on a repeating cycle (such as blinking an LED).

Love these. Please keep at them.

You should create more video more specifically about millis function and or arrays with servo motors with led

This is first tutorial on the GeekPub Extras that doesn't deal with a Arduino

I just have one question. Do you have other siblings besides The 8-Bit Guy? I worry that I'm missing out on some great content because I don't know your family! :) I enjoy the longer form stuff as well, but I really like these short form electronics demonstrations.

Pin 5 also needs the 10nF capacitor to ground, per the datasheet, for control voltage stability. For a proper robust design, this pin should not be left open.