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 * Homeostasis
 
-Temperature and humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini ESP32 board with a DHT22 sensor.
+Temperature and humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini ESP32 board with a DHT22 shield.
+
+This specific shield needs to have the data line connected to a pin different to D4, as explained in [[lhttps://blog.zs64.net/2018/02/fixing-the-wemos-d1-mini-dht22-shield][this blog post]].
 
 #+ATTR_HTML: :width 60%
-[[./result.png]]
+[[./board.jpg]]
 
 ** Pinout of the board
 
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