433 MHz RF module with Arduino Tutorial 4:
ADVERTENCIA: Por favor, compruebe si puede utilizar legalmente
transmisores de RF y receptores en su localidad antes de intentar
este proyecto (o la compra de los componentes).Este proyecto est
dirigido a aquellos que estn buscando para automatizar su
hogar.Continuando desde mi anterior "transmisor y receptor de 433
MHz" tutoriales (1,2y3): He tirado la necesidad de procesar la seal
con un ordenador.Esto significa que ahora podemos obtener el
Arduino para grabar la seal de un control remoto RF (muy cerca), y
reproducirlo en ningn momento a todos.El Arduino olvidar la seal
cuando apaga o cuando se restablece el tablero.El Arduino no tiene
una extensa memoria - hay un lmite al nmero de seales se pueden
almacenar en el tablero en un momento dado.Algunas personas han
optado por crear un "cdigo" en sus proyectos para ayudar a
maximizar el nmero de seales almacenadas en el tablero.En el nombre
de la simplicidad, no voy a codificar la seal como lo hice en mis
tutoriales anteriores.Voy a tener el Arduino para grabar la seal y
reproducirla - con la ayuda de un botn.El botn le ayudar a
gestionar el proceso global, y controlar el flujo de cdigo.Aparte
de la posibilidad de subir el boceto para el Arduino, este proyecto
no requerir el uso de una computadora.Tampoco se necesita una
tarjeta de sonido, o cualquier bibliotecas especializadas.Aqu estn
las piezas necesarias:
Piezas necesarias: UNO Arduino o junta compatibles Breadboard
Botn El rojo y el LED verde 330 ohmios (s) Alambres Mdulo de RF
(433 Mhz) - Transmisor y receptor paro laversin de 315 Mhz
Ventilador de techo Mercator / luz con control remoto
WARNING: Please check whether you can legally use RF
transmitters and receivers at your location before attempting this
project (or buying the components). This project is aimed at those
who are looking to automate their home.Carrying on from my previous
"433MHz transmitter and receiver" tutorials (1,2&3): I have
thrown away the need to process the signal with a computer. This
means that we can now get the Arduino to record the signal from an
RF remote (in close proximity), and play it back in no time at
all.The Arduino will forget the signal when powered down or when
the board is reset. The Arduino does not have an extensive memory -
there is a limit to how many signals can be stored on the board at
any one time. Some people have opted to create a "code" in their
projects to help maximise the number of signals stored on the
board. In the name of simplicity, I will not encode the signal like
I did in my previous tutorials.I will get the Arduino to record the
signal and play it back - with the help of a button. The button
will help manage the overall process, and control the flow of
code.Apart from uploading the sketch to the Arduino, this project
will not require the use of a computer. Nor will it need a sound
card, or any special libraries. Here are the parts required:
Parts Required: Arduino UNO or compatible board Breadboard
Button Red and Green LED 330 ohm resistor(s) Wires RF Module (433
Mhz) - Transmitter and Receiver pairor the315 Mhz version Mercator
Ceiling Fan/Light with Remote
Fritzing Sketch
Arduino Sketch
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/*433MHzRFREMOTEREPLAYsketchWrittenbyScottC24Jul2014ArduinoIDEversion1.0.5Website:http://arduinobasics.blogspot.comReceiver:XY-MK-5VTransmitter:FS1000A/XY-FSTDescription:UseArduinotoreceiveandtransmitRFRemotesignal-------------------------------------------------------------*/#definerfReceivePinA0//RF
Receiver data pin = Analog pin 0#definerfTransmitPin4//RF
Transmitter pin = digital pin 4#definebutton6//The button attached
to digital pin 6#defineledPin13//Onboard LED = digital pin 13const
int dataSize = 500; //Arduino memory is limited (max=1700)byte
storedData[dataSize]; //Create an array to store the dataconst
unsigned int threshold = 100; //signal threshold valueint
maxSignalLength = 255; //Set the maximum length of the signalint
dataCounter = 0; //Variable to measure the length of the signalint
buttonState = 1; //Variable to control the flow of code using
button pressesint buttonVal = 0; //Variable to hold the state of
the buttonint timeDelay = 105; //Used to slow down the signal
transmission (can be from 75 - 135)
void setup(){Serial.begin(9600); //Initialise Serial
communication - only required if you plan to print to the Serial
monitorpinMode(rfTransmitPin, OUTPUT); pinMode(ledPin, OUTPUT);
pinMode(button, INPUT);}void
loop(){buttonVal=digitalRead(button);if(buttonState>0 &&
buttonVal==HIGH){//Serial.println("Listening for
Signal");initVariables();listenForSignal();}buttonVal=digitalRead(button);if(buttonState
