A second power supply is needed (one for operating the LED strip and one for the Arduino itself). Otherwise, I could quickly adjust my code. This solution is designed without WLAN. For my motivation and my application scenario, please read the photon project.
You can purchase Grove kits, so you can install additional Grove components and expand the solution, for example, by a button. I wish lots of success and a lot of light in dark corners!
An schematic picture is not available: put the grove base shield with the pins on top the Arduino Uno. Thats all.
Further examples with a introduction in components from Grove Starter Kit can be found here: