Slides

What is a microcontroller?

A tiny computer on one chip, built to sense and control things.

• Processor, memory and pins in one package
• Runs one program, as soon as it has power

Inputs and outputs

Pins connect the chip to the real world.

• Inputs: buttons, sensors, knobs
• Outputs: LEDs, buzzers, displays

Arduino

Open-source boards and free software that made electronics easy to start with.

• The Uno is the classic beginner's board
• Written in the Arduino IDE

The sketch

Every Arduino program has two parts.

• setup() runs once
• loop() repeats forever

ESP32

A low-cost chip from Espressif Systems.

• Wi-Fi and Bluetooth built in
• Dual-core options
• Works at 3.3 volts

Which should I pick?

• Arduino Uno: simplest start, 5 volt parts
• ESP32: Wi-Fi, Bluetooth, more speed and memory

Your turn

Plug in a board, open the IDE and make an LED blink.

Go to Getting started