The Internet of Things gets easier with every passing day and there are a lot of devices that may be connected together. In this article I'll show you how to connect Raspberry PI (or any device with Python onboard) to RAPIFIRE with the use of the MQTT protocol.
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The DHT11, DHT21 and DHT22 are inexpensive sensors for measuring temperature and humidity. In this article we show you how to visualize data from a DHTxx sensor in RAPIFIRE.
Here are the components needed for this project:
- Arduino YUN,
- DHT21 sensor,
- a breadboard,
- 4k7 resistor (4,700 Ohms),