Tag Archive: Humidity
Day 23: MQTT Climate
![](https://iot.fkainka.de/wp-content/uploads/2016/09/Day23_Climate_Steckplatine-972x532.jpg)
Behind the door for today is a battery clip for a 9 V block, with which you can make the entire system moveable. An alternative to a battery is a power bank (a rechargeable battery pack, normally for mobile phones)….
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Day 18: Weather monitoring
![](https://iot.fkainka.de/wp-content/uploads/2016/09/Day18_2.jpg)
Behind today’s door is a very special component, namely a humidity sensor. Together with the phototransistor and the NTC, it creates a weather station for at-home use. The following layout is necessary for this purpose: Today’s layout is a bit…
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