Not a LoRaWAN sensor - yet! But useful oil burner monitor

 I put this together yesterday for the Mens Shed. It now needs to undergo field trials.

And you can see its graphs at: https://shannontownwetlands.ie/environmental-sensors/shannon-town-mens-shed-central-heating

The wiring of the three DS18B20 three wire (ground, power and data) probes in parallel and connecting two 2K2R resistors in series was tricky and I cable tied the arrange to a clothes peg!

How to get Tasmota on the device is covered here (and its part 1 video):


You can use the Tasmota menus to cusomise the name of the sensor and the prefix for the MQTT topic it sends its temperature values to tele/shannon_town_mens_shed/tasmota_3157E1/SENSOR












I then wrote some Node-Red code to subscribe to this topic and create a document with the three temperatures to publish to my MongoDB account so I can create a chart (graph) I can embed into blogs and websites.






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