Step 4: Solder the components
Follow the schematic and board layout to populate the board.
I suggest you to start with the microcontroller related stuff, and test it first.
Don't forget to solder the jumper wires!
Then solder all the LEDs and TLC5940 and all the remaining components.
Properly secure the batteries, otherwise it'll fly away! (check the video)
Since I didn't have the battery holders that I placed in the board layout, I had to use another kind of holder.