ref

• led matrix - How can I hook this 8x8 rgb led up to an arduino? - Electrical Engineering Stack Exchange
• Shift Registers - SparkFun Learn
• Serial to Parallel Shifting-Out with a 74HC595 | Arduino Documentation | Arduino Documentation
• Arduino Programming - Playing With Shift Registers (a.k.a Even More LEDs) (makeuseof.com)
• How To Make a Pulsating Arduino LED Cube That Looks Like It Came From The Future (makeuseof.com) (multiplexing)
• LED Multiplexing 101: 6 and 16 RGB LEDs With Just an Arduino : 7 Steps (with Pictures) - Instructables
• DIY LED Dot Matrix Scrolling Display Using Arduino : 6 Steps - Instructables
• Arduino Shift Register LCD with 74HC595 (electroschematics.com)
• 8x8 LED Dot Matrix - Assembly and Installation (Raspberry Pi) (tutorials-raspberrypi.com)
• MAX7219 LED Matrix Display Arduino Tutorial (4 Examples) (makerguides.com)

topics

• shift registers
• what is multiplexing?
• what is a demultiplexer?
• common anode, common cathode, row anode, row cathode

parts

• 8x8 single color LED matrix with 16 pins (no board)
  • if each of the 16 pins is used for controlling one of the 8 rows or 8 columns, then where is the “opposite charge” pin? i.e. if the control pins are what bring the current in, then where does the current leave???
  • can be common anode or common cathode
  • datasheets
  • shopping