IOT - 02 - Lampu

Summary

The lesson introduces online simulation tools for learning IoT without physical hardware, using an Arduino Uno as an example. The instructor demonstrates the Wokwi interface and basic Arduino code structure, and introduces Tinkercad as an alternative simulator.

Getting Started with Wokwi

1. Visit Wokwi.com and log in or create an account to save projects.
2. Choose an Arduino project and start with a blank simulation.
3. Select the Arduino Uno board.

Arduino Uno Pins

• Digital pins are numbered 0 through 13.
• The board includes ground (GND) and analog pins.
• The power section includes Vin, 5V, 3.3V, and ground, along with reset and IO reference pins.
• The instructor describes ground as the negative connection.

Basic Arduino Program Structure

• setup() runs once when the device starts and is used for initialization.
• loop() repeats continuously while the device has power.
• Serial.begin(115200); starts serial communication, which can be used for debugging.
• Serial.print() outputs text without moving to a new line; Serial.println() adds a line break.
• Statements must end with a semicolon.

Running the Simulation

Click the play or run control to compile and view the project. Wokwi’s free service may place projects in a queue, so users might need to wait or try running the simulation again.

Alternative Simulator: Tinkercad

The instructor introduces Tinkercad as another simulation website and an alternative if Wokwi is slow or queued. Users can log in, including through Google, and choose a student account.

Speakers and Sources

• Instructor: Leads the lesson and demonstrates the simulation tools and Arduino concepts.
• Students and class participants: Respond to the instructor and confirm whether they can hear and follow along.
• Websites demonstrated: Wokwi and Tinkercad.

The class begins with greetings and a brief prayer. The session also includes pauses to check audio and respond to connection or video lag.