DIY Project: IR Remote Control for Chromecast Audio

Hey everyone, I wanted to share a fun little project I recently completed. I’ve always been a bit of a DIY enthusiast, and when I came across the idea of controlling my Chromecast Audio with a standard IR remote, I knew I had to give it a try. The goal was to make it easier for my family to switch songs without me having to be in the same room as my phone. Let me walk you through how I did it!

The Setup
I started with a Chromecast Audio connected to an old Sony stereo via a simple audio cable. The challenge was that the stereo itself couldn’t control the Chromecast, so I needed a workaround. I decided to use an ESP8266 microcontroller with ESPEasy software, an IR receiver, and a standard remote control. The remote I chose was the one that came with the stereo, which made it convenient for my family to use.

The Process

  1. Hardware Setup: I connected the ESP8266 to my Wi-Fi network and set it up with ESPEasy. The IR receiver was hooked up to the ESP8266, and I made sure everything was powered correctly.
  2. IR Code Capture: The trickiest part was capturing the IR codes from the remote. I used ESPEasy’s built-in feature to display the codes when buttons were pressed. It took a bit of trial and error, but I managed to get all the necessary codes for play, pause, next, and previous tracks.
  3. Home Assistant Integration: Once I had the codes, I set up automations in Home Assistant. Each button press from the remote would trigger an MQTT message, which in turn would control the Chromecast. For example, pressing the play button would send a specific MQTT payload, which Home Assistant would interpret as a command to play the next track.

The Results
After a few tweaks, everything worked perfectly! My family can now switch songs effortlessly, and the setup is completely seamless. The only minor issue I encountered was with the previous track function—it sometimes restarts the song instead of skipping to the next one. I suspect this might be a limitation with how Home Assistant handles Chromecast controls, but it’s a small trade-off for the overall convenience.

Final Thoughts
This project was a great way to combine my love for DIY electronics with my desire to make my home more connected. It’s also been a fantastic learning experience, especially since I don’t have a lot of experience with Arduino or ESP8266 programming. If anyone has tips on how to improve the previous track functionality, I’d love to hear them!

I hope this guide helps someone else looking to simplify their media control setup. Happy tinkering!