31 Oct '17, 2pm

Review: IoT Data Logging Services with MQTT

Review: IoT Data Logging Services with MQTT

Once connected, the MQTT topic to publish to is simply your-username/feeds/feed-name. Even though JSON data format is supported, one caveat is that you can really only record one value at a time per feed. You can add latitude, longitude, and elevation to a single feed, but could not add temperature and humidity. By contrast, some platforms let you add more or less arbitrary amounts of variables inside a single feed, which I often find useful for things like weather stations. Nothing stops you from tying multiple feeds to a single dashboard, so I don’t see this as a major flaw. The only shortcoming I’ve been able to find is that Adafruit IO only supports MQTT QoS levels 0 and 1, with no support for 2.

Full article: https://hackaday.com/2017/10/31/review-iot-data-logging-s...

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