Introduction
Build it with a breadboard
Using a PCB
Connect the sensors
Configure TTN
The Arduino Sketch
Visualize in cayenne
Introduction
In this story, I descripe how I built a TTN-Node to meassure and visualize the different temperatures of my heating system:
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inlet temperature
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return temperature
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temperatur oft the hot water tank
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outside temperature
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Also I messure the humidtiy with a DHT11-Sensor on the board.
First I used a breadboard to connect RFM95W Radio with a Arduino Pro Micro 3.3V. But I don´t like breadboards so I designed a quit simple PCB-Board that fits into a nice and cheap enclosure.
I share the EAGLE-Files, also I will make some surplus PCB-Boards available on Tindie...