Simple demo of MQTT -> Processing bridge for I2C sensors

The Python script and the Processing script working together demonstrate usage of MQTT bridge in order to access a wide range of I2C sensors.

Installation requirements:

• Adafruit Adafruit_ADS1x15 Python library (follow installation instructions at https://github.com/adafruit/Adafruit_Python_ADS1x15)
• Mosquitto (apt-get install mosquitto), then start the MQTT service: mosquitto -d && sudo systemctl enable mosquitto.service
• Paho-mqtt (pip3 install paho-mqtt if using Python 3, pip install paho-mqtt for Python 2)
• Processing MQTT library (use library manager within Processing, search for MQTT)

After installation of necessary libraries, launch the Python script (python3 mqtt-sensor-infinite.py) and then launch the Processing sketch (mqtt_test/mqtt_test.pde) on the Raspberry Pi to see the readings being translated to the size of the circle:

Connections:

Please see the schematics in schematics folder: