ESP8266 Community Forum

- Sun Jul 05, 2015 4:03 pm #22520

it works grate but I can't restart the module without pulling out the IR transmitter first

@AntonKa, if you are facing the same issue as ofer211, I've answered earlier ont his thread that connecting a LED or a IRLED to ground is acting as pull-down on GPIO2, so it prevent booting properly. The polarity need to be reversed and connected to VCC, of course in the software doing a digitalWrite(LED, LOW) will turn on the LED, so polarity need to be reversed there too.

- Mon Aug 10, 2015 12:52 am #25505 Awesome, got my working right away with a ESP8266 12E.

I cobbled some code from another thread -> viewtopic.php?f=29&t=3787

Code: Select all#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <IRremoteESP8266.h>

const char* ssid = "......................................";
const char* password = ".............................";

IRsend irsend(13); //an IR led is connected to GPIO pin 13

MDNSResponder mdns;
ESP8266WebServer server(80);

void handleRoot() {
  server.send(200, "text/plain", "hello from esp8266!");
}

void handleNotFound(){
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET)?"GET":"POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i=0; i<server.args(); i++){
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  server.send(404, "text/plain", message);
}
 
void setup(void){
  pinMode(13,OUTPUT);
  Serial.begin(9600);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
 
  if (mdns.begin("esp8266", WiFi.localIP())) {
    Serial.println("MDNS responder started");
  }
 
  server.on("/", handleRoot);
 
  server.on("/IRSignal", [](){
  server.send(200, "text/plain", "Sent Signal");
  irsend.sendNEC(0xFF40BF,36);
  Serial.println("Signal Sent, doing delay");
  delay(3000);
  Serial.println("Delay Over");
  });
 
  server.onNotFound(handleNotFound);
 
  server.begin();
  Serial.println("HTTP server started");
}
 
void loop(void){
  server.handleClient();
}


So, to just access the webserver which in my run showed up as 192.168.1.16

.....
Connected to PRETTYFLYFORAWIFI
IP address: 192.168.1.16
MDNS responder started
HTTP server started
Signal Sent, doing delay
Delay Over


Then I was able to just add the extension
http://192.168.1.16/IRSignal

The important part was adding pinMode without that I guess it didn't know it was an output.

Just to make sure it worked without all the webserver stuff this is the basic code.

Code: Select all/*
 * IRremoteESP8266: IRsendDemo - demonstrates sending IR codes with IRsend
 * An IR LED must be connected to ESP8266 pin 0.
 * Version 0.1 June, 2015
 * Based on Ken Shirriff's IrsendDemo Version 0.1 July, 2009, Copyright 2009 Ken Shirriff, http://arcfn.com
 */

#include <IRremoteESP8266.h>

IRsend irsend(13); //an IR led is connected to GPIO pin 0

void setup()
{
  irsend.begin();
  Serial.begin(9600);
}

void loop() {
  Serial.println("NEC");
  irsend.sendNEC(0xFF40BF, 36);
  delay(10000);
}


What I really want to be able to do is use the maker channel on IFTTT and send power on, power off signals. I have been able to send to IFTTT just haven't worked out a running monitor for the trigger part. Separate topic though I'm sure. But hypothetically, "if (THIS LIGHT GETS TURNED ON) then (USE IR via 8322 to turn this ON)".

- Fri Jan 15, 2016 1:40 pm #38883 Hi there...

I have a code wich is working on ArduinoUno, but does not work with ESP.

My remote is not recognized so I need to use sendRaw, i get that raw code/timmings with Arduino.

unsigned int IR_AA_ON[] = {4300,4400, 500,1650, 500,600, 500,1650, 500,1650, 550,550, 500,550, 550,1600, 550,550, 550,550, 500,1650, 500,600, 500,600, 500,1650, 500,1650, 500,550, 550,1650, 500,600, 500,600, 500,550, 500,1700, 500,1600, 550,1600, 550,1650, 500,1650, 500,1700, 450,1650, 550,1600, 550,600, 500,550, 500,600, 500,550, 500,600, 500,1650, 550,550, 500,1650, 500,1700, 500,1600, 500,600, 550,550, 500,550, 550,600, 500,1600, 550,550, 500,600, 500,550, 550,1650, 500,1650, 500,1650, 500};

int khz = 38; // 38kHz carrier frequency
for (int i = 0; i < 3; i++) {
irsend.sendRaw(IR_AA_ON, sizeof(IR_AA_ON) / sizeof(IR_AA_ON[0]), khz);
delay(5);
}

I can see the IRled blinking, but something must be different because does not work with ESP.

Any advice?

thks

- Tue Mar 07, 2017 3:49 am #63440

Hi there...

unsigned int IR_AA_ON[] = {4300,4400, 500,1650, 500,600, 500,1650, 500,1650, 550,550, 500,550, 550,1600, 550,550, 550,550, 500,1650, 500,600, 500,600, 500,1650, 500,1650, 500,550, 550,1650, 500,600, 500,600, 500,550, 500,1700, 500,1600, 550,1600, 550,1650, 500,1650, 500,1700, 450,1650, 550,1600, 550,600, 500,550, 500,600, 500,550, 500,600, 500,1650, 550,550, 500,1650, 500,1700, 500,1600, 500,600, 550,550, 500,550, 550,600, 500,1600, 550,550, 500,600, 500,550, 550,1650, 500,1650, 500,1650, 500};

int khz = 38; // 38kHz carrier frequency

Hi @aegiacometti did you get this working?