Software PWM for controlling LEDs

LED’s brightness can be controlled with Pulse Width Modulation or PWM. Arduino only have so many PWM ports. Did you ever wonder how to control the LED on any Arduino Pin? Here is how you can make it. more ...


8x16 LED matrix controlled by 2 MAX7219's

8x8 LED Matrix

Expanding on my experiment with the MAX7219 controlling an 8x8 LED Matrix I added a second one. Both of the 8x8 displays and controllers were part of kits that couldn't fit neatly side by side, but the concept can still be demonstrated.

Using the circuit layout of the MAX7219 ...

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