I recently encountered an interesting challenge while configuring MQTT for my Victron Venus OS setup. I wanted to integrate my solar charger data into my home automation system, but I ran into some quirks that I thought I’d share and see if anyone else has encountered similar issues.
The Setup
I have a Victron Venus OS running on a Raspberry Pi 3, with its own MQTT broker. I set up a secondary bridge to connect it to my openHAB system. The configuration seemed straightforward, but I noticed an issue with voltage readings. The inverter was sending a float value like 49.220001220703125, but openHAB was only displaying 49. I tried adjusting the transformation pattern to .2f%, but it didn’t make a difference. Any ideas on what might be causing this rounding issue?
Solar Charger Integration
On a different note, I also tried integrating my solar charger using MQTT. I set up a configuration file with multiple sensors, but only one of them showed up as an entity in my system. The others were completely undetected, even though MQTTfx confirmed the messages were being published. It was frustrating because the configuration worked perfectly with a different MQTT schema in the past. Does anyone have tips on troubleshooting entity detection in MQTT setups?
Lessons Learned
This experience taught me the importance of thorough logging and testing when setting up MQTT integrations. I also realized how helpful it is to have a community to bounce ideas off. If anyone has faced similar issues or has best practices for MQTT configurations, I’d love to hear about them!
Looking Ahead
I’m now curious about how others handle precision issues in MQTT data. Do you stick with default settings, or do you tweak them based on your system’s needs? I’d also love to hear about successful MQTT integrations with solar systems—what worked well for you?
Thanks for reading, and happy tinkering!