hixfield / HixIRBlaster

HixIRBlaster

A WIFI connected IR transmitter and receiver based on the ESP8266 microcontroller. It is connected via MQTT where it :

• receives commands to switch-on my airco (Samsung only for the moment)
• send arbitrary IR (hex) codes.
• publishes the detected IR codes (via its IR receiver)

Improvements

• Configuration of WIFI SSID/PWD via web interface
• Design a PCB and 3D printed enclosure
• Add DS18B20 temperature sensor?
• Add OLED display to show current temp + airco status

hardware

• add button
• add ds18b20
• add i2c display interface
• add RGB lede
• add connector for radar motion?
• optional i2c term resistor
• room for the mhz19 (on the side)
• different places to mount ir receiver or led?

MQTT

Publishing

{room}
   └─── HixCO2
           └─── {deviceTag}
                     └─── device
                     │       └─── count
                     │       └─── room
                     │       └─── device_type
                     │       └─── device_version
                     │       └─── device_tag
                     │       └─── device_name
                     │       └─── wifi_ssid
                     │       └─── wifi_ip
                     │       └─── ac_temperature
                     │       
                     └─── status
                     │       └─── count
                     │       └─── wifi_rssi
                     │       └─── ac_enabled
                     │       └─── ir_received
                     │
                     └─── subscribe
                     │       └─── ac_temperature
                     │       └─── ac_on
                     │       └─── ac_off
                     │       └─── ac_toggle
                     │       └─── send_raw_ir
                     │
                     └─── influxdb

Subscribing

This device listens to the above depicted topics to set set the ac on/off (or toggle it), set the desired temperature and you can send raw ir codes.

influxdb topic publishing contents

To make the import in the influxdb from Node-RED as easy as possible the influxdb topic publishes a json document that can immediatly imported using the influxdb in node. They only thing required is to convert it to a json object via the To json node.

Following the influxdb in node the json is an array where:

• the first element contains the measurements
• the second element contains the tags

  [
   {
      "wifi_rssi"     : -45
      "ac_enabled"    : true
      "ir_received"   : "A78BCD"
   },
   {
      "device_type"   : "HixIRBlaster",
      "device_version": "2.5.8",
      "device_tag"    : "at_door"
      "room"          : "office",
      "wifi_ssid"     : "public_wifi"
   }
  ]

Configuration web interface

• Once connectted to the WIFI a normal browser can be used to configure the MQTT details.
• Just go the the device's ip address with your browser
• Password is intitially set as bornem1973.
• At this moment the WIFI SSID and password are hardcoded in the src/secret.cpp file