Fun with etching!

I tried etching my own PCB's with Ferric Chloride, for the mask, I just used a permanent marker and used a tiny drill bit for making the holes.

Making an alternatively blinking lights using NE555

Making the holes:

Soldering the components:

Finally :)

Making a %V Volatage step down reegulator for another project

Etched surface

Soldering the components: