5 CONTROLLING LEDS WITH CHARLIEPLEXING
It’s easy to control many LEDs with one Arduino board. However, you can also use the Charlieplexing method in the Arduino environment to control multiple LEDs one at a time without external display driver ICs. This is a great way to reduce part count (and expenses) in a project involving numeric or character displays.
In this chapter, you’ll learn to:
- Use Charlieplexing with an Arduino Uno or compatible board or an ATtiny85 microcontroller
- Use Charlieplexing with 6 and 12 LEDs
- Simplify planning Charlieplexed circuits with the help of logic tables
You’ll also build a 30-LED matrix display for alphanumeric ...
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