ESP8266 based gateway between MQTT and IR. Code compatible with PlatformIO. Works with ESP-01 (debug mode have to be disabled in globals.h)

• Receiving of IR transmission and publish it as MQTT messages
• Receive MQTT messages and send IR signal (multiple formats supported - NEC, RC5, LG, SONY, Global Cache )
• Storing raw IR messages on flash and transmitting via IR
• Constant current IR LED emitter circuit (based on Analysir schematic )
• MQTT over SSL support
• OTA updates

##Working modes

###IR transmitting

###IR receiving

##Used librariers

• IRremoteESP8266 - https://github.com/markszabo/IRremoteESP8266/
• ArduinoJson - https://github.com/bblanchon/ArduinoJson
• PubSubClient - https://github.com/knolleary/pubsubclient
• WiFiManager - https://github.com/tzapu/WiFiManager

##Installation

###GPIO connections:

For ESP01 following changes have to take place:

• in platformio.ini change board from d1_mini to esp01_1m
• in globals.h comment out line "#define DEBUG X"

###Schematic

###BOM

• D1,D2 - 1N4148
• Q1 - NPN transistor
• IR1 - IR receiver
• IR LED1, IR LED2 - Infrared LED
• R1 - 3.3kΩ
• R2 - 2.5Ω

###Compilation and firmware uploading

PlatformIO and Atom editor with PlatformIO IDE package are required. See installation procedure

git clone https://github.com/enc-X/mqtt-ir-transceiver

or download repository

Run Atom editor and in PlatformIO menu choose option Open Project folder.... Select folder with imported project.

From the list with files in the left tab open the platformio.ini and change the upload_port = com12 to the correct port with your ESP8266.

In PlatformIO menu choose option Build

Connect ESP to PC via serial adapter. In PlatformIO menu choose option Upload.

##Usage

During first boot device will act as AP with SSID IRTRANS-XXXXXXXX (password is XXXXXXXX). Connect to this AP and go to http://192.168.4.1. Configure WIFI and MQTT paramters.

If during boot device have is pressed, device will go to configuration mode.

• Run MQTT server (mosquitto is fine)
• Configure MQTT server for OpenHab transport
• Register IR Transceiver to the same MQTT server (for example MQTT prefix is 'esp8266/02')
• Example items configuration:

Group gIR <own_ir> (All)
Switch   ir_philips_on
        "Philips Power" <own_ir> (gIR)
        {mqtt=">[mosquitto:esp8266/02/sender/RC5/12:command:ON:56]", autoupdate="false"}
Switch   ir_philips_volp
        "Vol+"  <own_ir> (gIR)
        {mqtt=">[mosquitto:esp8266/02/sender/RC5/12:command:ON:1040]", autoupdate="false"}
Number ir_in_lg
        "LG IR command [%d]"    <own_ir> (gIR)
        {mqtt="<[mosquitto:esp8266/02/receiver/NEC/32:state:default]"}
Switch ir_adb_star
        "ADB 0" <own_ir) (gIR)
        {mqtt=">[mosquitto:esp8266/02/sender/sendGC:command:ON:38000,1,37,8,34,8,75,8,44,8,106,8,50,8,50,8,39,8,81,8,525,8,34,8,60,8,29,8,44,8,44,8,44,8,29,8,29,8,3058,8,34,8,75,8,44,8,106,8,50,8,50,8,39,8,81,8,525,8,34,8,101,8,70,8,44,8,44,8,44,8,29,8,29,8,3058]", autoupdate="false"}

• Using in rules:

rule lgTVturnInfoScreen
when
        Item ir_in_lg received update 551549190
then
        // Do somenting after button press
end

rule initIRmodule
when
        System started
then
        // Turn off Philips after system start
        postUpdate(ir_philips_on,OFF)

        // Switch LG TV to HDMI 1 by Global Cache code
        publish("mosquitto","esp8266/02/sender/sendGC","38000,1,69,343,172,21,22,21,22,21,65,21,22,21,22,21,22,21,22,21,22,21,65,21,65,21,22,21,65,21,65,21,65,21,65,21,65,21,22,21,65,21,65,21,65,21,22,21,22,21,65,21,65,21,65,21,22,21,22,21,22,21,65,21,65,21,22,21,22,21,1673,343,86,21,3732")
end