/*
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Blink
*/
int LED = 0;
int del = 1000;

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED, OUTPUT);  
}

// the loop function runs over and over again forever
void loop() {
    digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(del);               // wait for a second
    digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
    delay(del);               // wait for a second
}
					

/*
  Software serial multple serial test

  Receives from the hardware serial, sends to software serial.
  Receives from software serial, sends to hardware serial.

  The circuit:
   RX is digital pin 2 (connect to TX of other device)
   TX is digital pin 1 (connect to RX of other device)

  Note:
  Not all pins on the Mega and Mega 2560 support change interrupts,
  so only the following can be used for RX:
  10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

  Not all pins on the Leonardo and Micro support change interrupts,
  so only the following can be used for RX:
  8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

  created back in the mists of time
  modified 25 May 2012
  by Tom Igoe
  based on Mikal Hart's example

  This example code is in the public domain.

*/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 1); // RX, TX

void setup() {
  mySerial.begin(4800);
}

void loop() { // run over and over
  mySerial.println("Hello, world?");
}					

/*
  Fade

  This example shows how to fade an LED on pin 9 using the analogWrite()
  function.

  The analogWrite() function uses PWM, so if you want to change the pin you're
  using, be sure to use another PWM capable pin. On most Arduino, the PWM pins
  are identified with a "~" sign, like ~3, ~5, ~6, ~9, ~10 and ~11.

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Fade
*/

int led = 1;           // the PWM pin the LED is attached to
int brightness = 0;    // how bright the LED is
int fadeAmount = 1;    // how many points to fade the LED by

// the setup routine runs once when you press reset:
void setup() {
  // declare pin 9 to be an output:
  pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  // set the brightness of pin 9:
  analogWrite(led, brightness);

  // change the brightness for next time through the loop:
  brightness = brightness + fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (brightness <= 0 || brightness >= 150) {
    fadeAmount = -fadeAmount;
  }
  // wait for 30 milliseconds to see the dimming effect
  delay(30);
}