Integrating ESP32 Buttons with Home Assistant Automations

General
1

I’ve been diving into the world of Home Assistant automations and ESP32 integration, and I wanted to share my journey and some insights I’ve gained along the way. If you’re new to this, like me, or if you’re looking to streamline your smart home setup, this might be helpful!

My Setup

I’ve set up a system where I use an ESP32 display with OpenHASP and MQTT to control my Roomba vacuum cleaner. The goal was to have three simple buttons on the display—START, STOP, and DOCK—that would trigger specific actions in Home Assistant. Here’s what my automation setup looks like:

yaml

  • id: “1760820635416”
    alias: Roomba starten
    triggers:

    • topic: home/roomba/command
      payload: start
      actions:
    • service: vacuum.start
      target:
      entity_id: vacuum.roomba_d_rex

  • id: “1760821341461”
    alias: Roomba stop
    triggers:

    • topic: home/roomba/command
      payload: stop
      actions:
    • service: vacuum.stop
      target:
      entity_id: vacuum.roomba_d_rex

  • id: “1760821511678”
    alias: Roomba Dock
    triggers:

    • topic: home/roomba/command
      payload: dock
      actions:
    • service: vacuum.return_to_base
      target:
      entity_id: vacuum.roomba_d_rex

And here’s the configuration for the buttons on OpenHASP:

{
“page”:3,
“id”:3,
“obj”:“btn”,
“x”:10,
“y”:70,
“w”:100,
“h”:60,
“text”:“START”,
“text_font”:2,
“bg_color”:“#00aa00”,
“text_color”:“#ffffff”,
“toggle”:true
}

{
“page”:3,
“id”:4,
“obj”:“btn”,
“x”:120,
“y”:70,
“w”:100,
“h”:60,
“text”:“STOP”,
“text_font”:2,
“bg_color”:“#aa0000”,
“text_color”:“#ffffff”,
“toggle”:true
}

{
“page”:3,
“id”:5,
“obj”:“btn”,
“x”:230,
“y”:70,
“w”:100,
“h”:60,
“text”:“DOCK”,
“text_font”:2,
“bg_color”:“#0066cc”,
“text_color”:“#ffffff”,
“toggle”:true
}

The Challenge

Everything seemed to be working smoothly on the surface. The buttons were responding, and I could see the MQTT commands being received in MQTT Explorer. However, there was one big issue—the Roomba wasn’t responding to these commands at all. It was perplexing! The commands were being sent, but they weren’t being acted upon by the vacuum cleaner.

The Solution

After some research and troubleshooting, I realized that the issue was with how the MQTT messages were being handled within Home Assistant. The commands were being received, but they weren’t being correctly routed to the vacuum entity. To fix this, I had to ensure that the MQTT integration was properly configured and that the automation rules were correctly set up to trigger the vacuum actions.

Lessons Learned

This experience taught me a few valuable lessons:

  1. MQTT Configuration is Key: Ensure that your MQTT broker is correctly set up and that all devices are subscribed to the right topics.
  2. Automation Rules Need Precision: Double-check your automation triggers and actions to make sure they’re correctly mapped to the desired outcomes.
  3. Debugging is a Must: Use tools like MQTT Explorer to monitor the flow of messages and identify where things might be going wrong.
  4. Community Support is Invaluable: Don’t hesitate to reach out to forums and communities for help. Someone else might have encountered the same issue and can offer a solution.

Final Thoughts

While this project had its challenges, it was incredibly rewarding to see everything come together. The ability to control my Roomba with just the press of a button on an ESP32 display is a huge convenience, and it’s a testament to the power of Home Assistant and MQTT integration. If you’re looking to embark on a similar project, I’d encourage you to start small, test each component thoroughly, and don’t get discouraged by setbacks. The learning process is as valuable as the end result!

If you’ve got any questions or tips about ESP32 integration or Home Assistant automations, feel free to drop a comment below. I’d love to hear your experiences and learn from your setups!

Happy coding and automating! :rocket: