This post is mostly about the crafting part of this project.

In general i just used up 5 Pins of the Atmega to connect them via series Resistor to a LED. I soldered enameled copper wire to the 5 LEDs and connected them to the #The Atmega Hearth.

You may connect the LEDs to your own Controller PCB.

LED with enameled copper wire.

This is the Addition to the Atmega Hearth.

This is a 5x2 pinheader with the LEDs already connected.

This is the common test of the soldering :) Unexpectedly it worked all with the first try :)

This is the bottom side of the mountain crystal cluster. As you may see there are spots which are better or worse to put LEDs at. I tried to put the LEDs where the crystal was most clear. I also chosen this cluster since it looked best with light from the bottom. Now the rather ugly part: Hot glueing the LEDs to the cluster. I didn't take a lot pictures of this since it looks a lot like bricolage.

After the LEDs were hot glued, i glued two cubes below the cluster for better stability and mount for the PCB. I secured all fragile parts with hot glue since all below is buried in planting clay.

I also drilled a hole into the planting pot - so no cable obscures the upper view - you can only see it from behind..

Next step is to fill the planting pot with Seramis Planting Clay (Advantages: Looks fine, is not conductive, looks more clean than soil) and bury the stuff inside.

Stay tuned for the final outcome!