Hey everyone, I wanted to share my experience with MQTT device discovery after struggling with it for a while. I was trying to add two switch entities from my ESP32 using MQTT discovery, but I kept running into issues. Here’s what I did:
Initially, I included the dev section in my payload, which contained device information like IDs, name, model, and manufacturer. However, when I sent this payload, nothing showed up in Home Assistant, and there were no logs indicating any issues.
After some trial and error, I realized that removing the dev section made the entities appear as expected. This was puzzling because I thought the dev section was necessary for proper device registration. I decided to look into the Home Assistant documentation and community forums for answers.
I discovered that while the dev section is optional, it’s recommended for better device management and organization. However, if it’s not configured correctly, it can cause issues. In my case, I realized that the mf (manufacturer) field I included wasn’t recognized by Home Assistant, which might have caused the payload to be ignored.
To fix this, I made sure to include only valid fields in the dev section. I also simplified the payload to ensure there were no syntax errors. Here’s the corrected version of my payload:
{
“name”: “Switch 1”,
“uniq_id”: “switch_1”,
“stat_t”: “switch_1/state”,
“cmd_t”: “switch_1/command”,
“pl_on”: “on”,
“pl_off”: “off”,
“ret”: true,
“dev”: {
“ids”: [“my_esp32”],
“name”: “ESP32 Controller”,
“mdl”: “ESP32”,
“sw”: “1.0.0”
}
}
By making these adjustments, the entities were successfully discovered and added to Home Assistant. This experience taught me the importance of thorough testing and consulting documentation when integrating new devices. I hope this helps someone else who might be facing similar issues!
Cheers,
[Your Name]