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Chapter 17

Displays, lights and sound

4 min read5 sections
In this chapter · 5 sections
  1. LEDs and lighting
  2. Character and segment displays
  3. Graphic displays
  4. Buzzers and sound
  5. Choosing an output

96-inch OLED for readings, a 16×2 LCD for menus, LEDs for alerts and a buzzer for alarms. Most popular displays need only four wires over I2C.

Outputs let a device show status without a phone: a 0.96-inch OLED for readings, a 16×2 LCD for menus, LEDs for alerts and a buzzer for alarms. Most popular displays need only four wires over I2C.

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