How to connect and share data with multiple sensors

[shramik_salgaonkar]

Multiple MQTT Clients on 8266

Here is a little demo to answer the question about how to move data between 8266s. My first solution was for the 8266 receiver to query the Cayenne server using REST API, which worked until the REST API outage problem, so I finally read up MQTT and used it. [thermo] I have several 8266 reporting temperatures, pressures, etc. that all report to Cayenne every 15 sec or 5 minutes, and all these can be put together on a single web page or graph at the cayenne website, and previously fetched down…