8-part series

Beginner Arduino ESP32 course — IoT from Blink to SmartNode

Free ESP32 course: 8 lessons from Arduino IDE setup, GPIO, PWM/servo, ADC/DHT22, WiFi, HTTP, web relay control, to a SmartNode smart-home capstone.

This **beginner Arduino ESP32** course is for students, makers, and IoT newcomers. You progress from **Blink**, **GPIO**, **PWM/servo**, **ADC sensors**, **WiFi Station**, **HTTP client**, **on-chip web server**, to a **smart-home capstone** controlling a relay from the browser.

Start with part 1 — setup and Blink LED. See also: Learn Arduino ESP32 from scratch.

Start with part 1 →

ESP32 course FAQs

How is ESP32 different from Arduino Uno?

ESP32 includes WiFi and Bluetooth, a dual-core CPU, more GPIO, and 12-bit ADC — ideal for IoT. Uno is simpler with no built-in radio. This course uses an ESP32 DevKit (ESP32-WROOM) with Arduino IDE 2.x.

What parts do I need?

Minimum: ESP32 DevKit, USB cable, LEDs, 220–330Ω resistors, push buttons, jumper wires, breadboard. From parts 3–4: SG90 servo, DHT22 or LM35 sensor, 5V relay module. Budget roughly $15–25 USD depending on vendor.

Arduino only, or ESP-IDF?

Arduino framework only (Arduino IDE 2.x or PlatformIO with the arduino-esp32 core). ESP-IDF is more powerful but steeper; you can move to it after this course.

How long to finish all 8 parts?

About 4–6 hours reading and coding, plus 2–4 hands-on sessions. Part 8 capstone deserves 2–3 hours for a small smart-home demo.

All parts in this series

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