Dot Matrix Displays
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This is a fun I2C display. Matrices like these are 'multiplexed', so to control all the 128 LEDs you need 24 pins. That's a lot of pins, we feel your pain! This display is controlled with a simpl..
Dot Matrix Display 32X8 - Max7219 Driver
When you need some help driving a lot of LEDs, the MAX7219 is the best friend. The annoying thing about multiplexing is that you need to constantly refresh ..
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