SunFounder ESP32 Starter Kit
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• 2.6 Display Characters
2.12 Video 12: Using WS2812 RGB Strip
This tutorial is perfect to learn how to utilize the WS2812 LED strip with ESP32 for creating various colors and
controlling individual LEDs:
• WS2812 LED Strip Introduction: A flexible strip with adhesive back, 5050 LEDs, and individual control
capabilities.
• Technical Details: The WS2812 LEDs support 256 color levels and can be cascaded via a single wire. Each
LED is 5mm x 5mm with a specified operating voltage and temperature range.
• Color Control: Learn to create any color with RGB (Red, Green, Blue) combinations. Includes understanding
of color codes in both binary and hexadecimal formats.
• Wiring Guide: Simple wiring with power, ground, and data connections. The data line connects to pin 14 of
the ESP32.
• Arduino Programming: Detailed explanation of Arduino code for controlling the strip.
• Interactive Projects: Step-by-step instructions for several projects like a walking light LED, back and forth light
movement, and controlling individual LEDs with specific colors.
• Color Picker Tool: How to use an RGB color picker to understand and choose specific colors for the LEDs.
Video
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• 2.7 RGB LED Strip
2.13 Video 13: Arduino Beep with Active Buzzer
Here, you will learn how to use an active buzzer with the ESP32 module for generating sound:
• Active Buzzer Introduction: Learn to control an active buzzer using a transistor. The buzzer emits sound when
powered up.
• Buzzer Components: The tutorial uses an active buzzer, a 1K resistor, jumper wires, and an S8050 transistor.
• Wiring and Schematic: Understand the wiring schematic for connecting the buzzer to the ESP32.
• Buzzer Specifications: The active buzzer operates within a voltage range of 3 to 8 volts and has an internal
oscillating frequency of around 2700 Hz.
• Arduino Programming: The tutorial covers the setup, loop functions, and how to control the buzzer using
digital signals.
• Interactive Project: The project demonstrates how to generate a beeping sound with the buzzer, controlled by
the ESP32.
• Demonstration: Once the code is uploaded, the ESP32 module activates the buzzer, producing a beeping sound.
Video
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258 Chapter 2. Arduino Video Course
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