Building your own decision system-based IoT

In this section, we build a simple decision system using fuzzy logic on Raspberry Pi. We use Python for implementation. We build a system to monitor temperature and humidity in a room to decide if the environment is comfortable or not. If the environment is not comfortable, then we turn on a cooler machine.

The following is our design system:

Building your own decision system-based IoT

Wiring

We use DHT22 and relay modules for our wiring. Connect the DHT22 module into the following connections:

  • DHT22 pin 1 (VDD) is connected to the 3.3V pin from Raspberry Pi
  • DHT22 pin 2 (SIG) is connected to the GPIO23 (see the BCM column) pin from Raspberry Pi
  • DHT22 ...

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