• Here is the list of components needed:

• If you use a small microcontroller like RP2040, Arduino Nano, or ESP32, this step is essential. If you use an Arduino Uno, skip this step.
• First, align your microcontroller pins with the breadboard holes.

• Now gently push the microcontroller down.

• Now the microcontroller is attached to the breadboard. Congrats!

• Before that, we need to understand how a breadboard and a resistor work.

• This is a breadboard. It is good for prototyping before making a real design.
• The breadboard has 3 main parts: power rails, terminal strips, and a center notch.
• The power rails are on the left and right sides. They are usually connected to a power source like a battery.
• The terminal strips are the small holes where your electronic components go. They are connected horizontally.
• The notch divides the terminal strips so you can plug in components like LEDs or microcontrollers more easily.

• Resistors protect your components, such as LEDs.

• They come in many shapes and values.

• In this project, we will use a 1kΩ resistor.

• After plugging in the microcontroller, find two holes to place the 1kΩ resistor. It should look something like this:

• Now it’s time to place the LED.
• If you didn’t know, the longer leg is positive (anode) and the shorter one is negative (cathode).
• Before placing the LED, bend the legs like this:

• Let’s cut the positive leg so it is the same length as the negative one.

• Now connect the positive leg to the closest hole that contains one end of the resistor.
• Connect the negative leg to the negative power rail.

• Now let’s connect the LED to the microcontroller.
• First, connect a wire from the negative power rail to a GND pin on the microcontroller.

• Second, connect a wire from the resistor to a GPIO pin (GPIO 26 in my case).

https://www.arduino.cc/en/software/

-> Open File -> Preferencesrences
A window will open where you will find "Additional Board Manager URLs.""

Paste: https://espressif.github.io/arduino-esp32/package_esp32_index.json

Click OK.

Click on the Board Manager button on the left and search for "ESP32." Install the library from Espressif.

Wait for the board to install.

Tools -> Board -> ESP32 Arduino -> ESP32C3 Dev Module (or the board you use) you use)

Tools -> Port -> Choose the COM port your ESP32 is connected to.ed to.

• Upload this to your microcontroller:

const int ledPin = 26;


void setup() {
   pinMode(ledPin, OUTPUT);
}



void loop() {
   digitalWrite(ledPin, HIGH);
   delay(500);
   digitalWrite(ledPin, LOW);
   delay(500);
}}

And you're done! 🎉