Adafruit KB2040

• 1 LED
• 2 Jumper Cables
• Adafruit KB2040 (or any other compatible Microcontroller)
• Power Supply Cable (This is what allows you to power the microcontroller using your computer).

1. Connect the Adafruit KB2040 Microcontroller to the breadboard in the middle like so:

2. Conect the microcontroller to your computer
3. Navigate in the Arduino IDE menu select the Adafruit KB2040 (This will only work if you have previously set up the board support package, if you haven't refer to this tutorial).
4. Now you should see the sketch interphase. These is where all of the coding will occur. There are two main sections: Void Setup and Void loop. The set up section allow us to set pin modes and call other libraries and only happens once. The loop section is where most of the code is written; anything that you write here will be repeated indefinitely from top to bottom until it’s stopped.

Building The Circuit

1. take a jumper cable and connect one end to your ground(GND) in the microcontroller. this will be your negative terminal in the circuit.

2. take another Jumper cable and connect it to pin 2.;This will be the pin we will be using as positive terminal.

3. take an LED and placed in the breadboard going from one bank to the other (LEDs are directional, meaning that they won't work if they are not place in the right orientation. The long leg is the positive side and the short one is the negative. Remember this for the next step).

4. Connect each jumper cable to its corresponding LED terminal. Connect the negative/ Ground jumper cable to the negative side of the LED (short leg) and the positive jumper cable to the positive side of the LED (long leg).

5. The Circuit is done! Now let’s do some coding!

Code to make the a blinking LED

1. Go to the Void Setup section and write the following function: [pinMode( 2, OUTPUT);] With this you are telling the board to “use digital pin #2 as an output”.

2. REMAINDER 1 : ALWAYS put semi-comes (;) at the end of a line of code. otherwise Arduino IDE will not understand.
3. Go to Void loop and write the following line of code: [digitalWrite( 2, HIGH);] With this you are telling the board to send power to pin #2. Digital pins can only send 2 amounts of power: Full power (HIGH) and no power (LOW). They are like 1 and 0 on binary code or the on/off switch in your room.

4. Now, if you upload these instructions to the microcontroller you won't be able to see anything. To make it blink we need to make the LED turn on(HIGH) and off(LOW). To do this add the same line of code as before but instead of (HIGH) set it up for (LOW): [digitalWrite(2, LOW);

5. If you upload this you won't be able to see the LED blink because it is blinking way too fast. You need to set a delay between turning the LED on and off and at the end of the of the cycle. To do this write the following line of code in between the HIGH and LOW commands and at the end of the Void loop: [delay(1000);] This will set a 1 second delay between each action.

6. If you did the all of the previous steps correctly you should be able to verify your code for errors by hitting the check mark button at the top right corner.

7. If you didn't have any warnings you can proceed and upload the sketch to the microcontroller by clicking on the button with an arrow pointing to the right.

8. If you did all the previous steps correctly you should have a blinking LED in your breadboard circuit!