Each tile has a microprocesser inside that controls the LEDs.

Hardware: a processor (NodeMCU - based on ESP8266, or Microbit), one micro-processor per tile.

Software required: microBlocks - installed on your computer.

Other useful items for creating tiles.

• Multiple LEDs, I use LEDs that are prewired with a resistor for LED protection.
• Battery box compatible with microprocessor : 3 x AA batteries for NodeMCU or 3xAAA for Microbit
• Terminal Connector Blocks are useful for making simple circuits
• Crocodile clips for connecting circuits.
• box or other container to create your tile
• Felt or other material to decorate it.