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LED Displays with the MAX7219
The MAX7219 is a very useful and versatile display driver that can drive up to 64 LEDs independently. It’s well-known, but existing tutorials often use ready-made libraries. On the other hand, I propose a down-to-earth approach by directly controlling the component’s registers for a better understanding. This provides hands-on information to help get your projects working with this useful, economical, and fun chip.
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