Arduino MAKERKIT

The Arduino board

Arduino Uno is a microcontroller board.

• ATmega328P Chip

• 16 MHz 

• Flash Memory 32 KB

• 14 digital input/output pins  (6 PWM out)

• Max 20 mA per pin

• 6 analog inputs,

• USB connection

• Power jack (6-20V)

• Reset button

• Test led

You can tinker with your Uno without worrying too much about doing something wrong, worst case scenario you can replace the chip for a few dollars and start over again.

Arduino shield

The shield allows you to quickly connect different components to the Arduino board. Notice how there are multiple 5v pins and ground pins. This enables you to have more than one component connected at the same time.

The white rows (digital and analogue) correlate to the pins on the Arduino board. So the white 0 pin is connected to pin 0 on the Arduino (see yellow illustration). 

Detect a button state

A push button is a simple way to create interaction. It can be used to create different outputs depending on the length of the push, the number of pushes, etc. 

Attach one wire from the button to a digital pin and the other to the ground. To test the circuit, use the following code:

void setup()  {

  pinMode(5, INPUT_PULLUP);

  Serial.begin(9600);

}

void loop()  {

  boolean btnPressed = !digitalRead(5);

  if(btnPressed == true)  {

    Serial.println("button has been pressed.");    

  }

}

#include "FastLED.h"

  // How many leds in your strip?

  #define NUM_LEDS 10

  #define DATA_PIN 4

  // Define the array of leds

  CRGB leds[NUM_LEDS];

  void setup() {

    FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);

    pinMode(3, INPUT_PULLUP);

  }

  void loop() {

    boolean btnPressed = !digitalRead(3);

    if (btnPressed == true)

    {

      leds[0] = CRGB( 255, 0, 0);

      leds[1] = CRGB( 0, 255, 0);

      leds[2] = CRGB( 0, 0, 255);

    }

    else

    {

      leds[0] = CRGB( 0, 0, 0);

      leds[1] = CRGB( 0, 0, 0);

      leds[2] = CRGB( 0, 0, 0);

    }

    FastLED.show();

  }

The plotter-example looks like this: 

#include <Adafruit_MPU6050.h>

#include <Adafruit_Sensor.h>

#include <Wire.h>

Adafruit_MPU6050 mpu;

void setup(void) {

  Serial.begin(115200);

  while (!Serial) {

    delay(10);

   }

  if (!mpu.begin()) {

    Serial.println("Failed to find MPU6050 chip");

    while (1) {

      delay(10);

    }

   }

  mpu.setAccelerometerRange(MPU6050_RANGE_16_G);

  mpu.setGyroRange(MPU6050_RANGE_250_DEG);

  mpu.setFilterBandwidth(MPU6050_BAND_21_HZ);

  Serial.println("");

  delay(100);

}

void loop() {

  sensors_event_t a, g, temp;

  mpu.getEvent(&a, &g, &temp);

    Serial.print(a.acceleration.x);

    Serial.print(",");

    Serial.print(a.acceleration.y);

    Serial.print(",");

    Serial.print(a.acceleration.z);

    Serial.print(", ");

    Serial.print(g.gyro.x);

    Serial.print(",");

    Serial.print(g.gyro.y);

    Serial.print(",");

    Serial.print(g.gyro.z);

    Serial.println("");

  delay(10);

}

#include "GY_85.h"

#include <Wire.h>

GY_85 GY85;     //create the object

void setup()

{

    Wire.begin();

    delay(10);

    Serial.begin(9600);

    delay(10);

    GY85.init();

    delay(10);

}

void loop()

{

    int ax = GY85.accelerometer_x( GY85.readFromAccelerometer() );

    int ay = GY85.accelerometer_y( GY85.readFromAccelerometer() );

    int az = GY85.accelerometer_z( GY85.readFromAccelerometer() );

    int cx = GY85.compass_x( GY85.readFromCompass() );

    int cy = GY85.compass_y( GY85.readFromCompass() );

    int cz = GY85.compass_z( GY85.readFromCompass() );

    float gx = GY85.gyro_x( GY85.readGyro() );

    float gy = GY85.gyro_y( GY85.readGyro() );

    float gz = GY85.gyro_z( GY85.readGyro() );

    float gt = GY85.temp  ( GY85.readGyro() );

    Serial.print  ( "accelerometer" );

    Serial.print  ( " x:" );

    Serial.print  ( ax );

    Serial.print  ( " y:" );

    Serial.print  ( ay );

    Serial.print  ( " z:" );

    Serial.print  ( az );

    Serial.print  ( "  compass" );

    Serial.print  ( " x:" );

    Serial.print  ( cx );

    Serial.print  ( " y:" );

    Serial.print  ( cy );

    Serial.print  (" z:");

    Serial.print  ( cz );

    Serial.print  ( "  gyro" );

    Serial.print  ( " x:" );

    Serial.print  ( gx );

    Serial.print  ( " y:" );

    Serial.print  ( gy );

    Serial.print  ( " z:" );

    Serial.print  ( gz );

    Serial.print  ( " gyro temp:" );

    Serial.println( gt );

    delay(500);             // only read every 0,5 seconds, 10ms for 100Hz, 20ms for 50Hz

}