I want to do a what I hope is a simple project. Making a led light clock built into a plank.
Basically I'm planning on cutting 28 slots in a piece of wood, and placing a small LED light in each slot, then covering it all up with a very thin piece of wood that these lights can shine through.
My question is, what is the easiest way to control these lights with a raspberry pi Zero, as I need to control more lights than there are available GPIO pins?
I'm coming from the software side so I have no problem coding the clock or figuring out which of the 28 leds need to be on to display the correct time. But what hardware can I use to control this many Led lights?
If there is something which is close to plug and play I would prefer that, although any solution is great.