Portal for public SaaS MQTT labs based on MIMIC MQTT Simulator .
You can try it yourself for free (no registration/credit card required), then upgrade to paid lab if you like it:
Shared, read-only lab with Bosch sensors publishing unique JSON messages with temperature telemetry to the public broker BROKER.HIVEMQ.COM. Access it here .
To change the temperature, select a running (green) sensor, invoke the Agent->Variables menu item, and change the temp variable.
See the temperature measurements change in real-time in your subscriber client.
Test your subscriber applications by connecting to BROKER.HIVEMQ.COM.
For web-sockets client, use a SSL-connection to broker.hivemq.com:8000 as detailed here. To see payloads, subscribe to topic BCDS/#
You can see published messages with a MQTT subscriber client, eg.
NOTE: Since it is shared, other people may be changing values at the same time you are. Lab is reset to known state at any point, but usually at midnight EST. If you want your own lab, you can rent it here.