Project 9: 8*8 Led Board - Keyestudio Smart Little Turtle Robot V3 Manual

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Project 9: 8*8 LED Board

a matrix for you, but there's a lot of wiring to set up and they take up a ton
of space. After all, wouldn't it be awesome if you could control a matrix
without tons of wiring?
We control and drive 8*8 LED Board by HT16K33 chip, which is convenient
for wiring and greatly save the resources of microcontroller.
(2) Components
(1) Description
A fun way to make a small display is to use an 8x8
matrix or a 4-digit 7-segment display. Matrices
like these are 'multiplexed' - to control 64 LEDs
you need 16 pins. That's a lot of pins, and there
are driver chips like the MAX7219 that can control
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