After testing the single modules for a sensor I finished the combination. Now the ESP8266 reads the temperature and humidity and sends them to the MQTT broker together with the actual voltage and the number of attempts to make a connection to the broker. The later is useful, because the ESP cannot reliably connect to the broker. I don’t know the reason, some investigation is necessary.
After a lot of gambling around with a breadboard and afterwards soldering on a perfboard, I finished the first version of the sensor, which I want to spread in my flat. So the hardware is finished (for now – there are ideas for improvement). For the software I tested the individual parts.
It’s me again – Daniel MakerBear. Last weekend from May 27 to May 29, 2016 the MakerFaire Hannover 2016 took place. And of course I accompanied Daniel LeMath and the Arduino Group Hannover as I did last year in Berlin. And again there was a bunch of interesting things to see.
Now I have a small house connected to the world. Normally its a house to be illuminated by a tee light. Now it is equipped with an 8mm WS2812 LED. The LED is controlled by an Arduino (sketch), which is connected with a USB cable to a Raspberry Pi. On the Raspberry runs a little Python program, which gets in regular intervals the actual colour from cheerlights. The world can change the colour via a tweet, e.g. “#cheerlights green”.