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  • WiFi IR Blaster over 2 years ago

    For the remote control, you can use just the NodeMCU (or any ESP8266). The microcontroller on the ESP8266 is actually more powerful than the ATmega chips found on most arduino boards, and you can now program the ESPs directly from the Arduino IDE (you can now add it under the board manager in the IDE).

    As far as com port errors, I would make sure you have the board added to the arduino IDE correctly and make sure you have the USB drivers used by the NodeMCU installed for your OS. I've seen different ESP8266 modules and dev boards come from their vendors with different serial baud rates set by default, so the first time you connect you may need to try a few before you succeed.

    There are also lots of dedicated tutorials for setting up the Arduino IDE for ESP8266/NodeMCUs, so try searching "nodemcu arduino ide" or "esp8266 arduino ide" for detailed information and troubleshooting steps.

  • WiFi IR Blaster over 2 years ago

    Yes actually. In the web app I'm forming the cURL request as http://room/command. The idea is to define multiple ESP8266s, one for each room, and only have the relevant commands sent. The other way to do this is to send the commands to all ESP8266 devices and have them each parse the string for their device ID.

  • WiFi IR Blaster over 2 years ago

    I didn't end up put the temp sensor into this device, but made a smaller stand alone temp/humidity sensor that logs data to thingspeak. I haven't had any new devices to add, so I haven't revisited the IR learning yet.

    For the Alexa integration I was just able to use the out of the box IFTTT Maker and Alexa channels to send an HTTP request when using a trigger word in Alexa:

    https://ifttt.com/maker
    https://ifttt.com/amazon_alexa

    Right now I just have it set to power up my receiver and TV when I say "Alexa, trigger TV on", and off as well.

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