sensordata-reading

This project was developed as part of a course in Python

and is to be considered as a newbie project according to coding style and elegance in programming in Python

Projekt idea : read different kind of sensordata from serial COM and broadcast in realtime over TCP port, save data for later use and plot data in realtime

Use with an Arduino ( pytest.ino compiled on an Arduino Nano ver.3 but any Arduino would be ok).

Incoming data formatted to select different sensors :

• 'T' = temperature sensor (eg. Dallas 18b20) in format:

    T~1~1~26.00!0!28b3a47b030000b4
    
    - first parameter = 'T' for temperature (sensotype)
  
    - second parameter = 'ID' for connected microcontroller
    
    - third parameter = number of connected sensors
    
    - fourth parameter = temperature in Celcius
    
    - fifth parameter = sensor number (index 0)
    
    - sixth parameter = unique ROM -address for every connected  Dallas sensor
  

• 'H' = humidity (ToDo)

• etc.

For testing program:

1. Download 'pythontest.ino' to any Arduino. Dallas temp. sensor connected to pin 4 as default. There are numerious example how to connect the tempsensor to an Arduino. Google if unsure howto!

2. run main.py file:

   • Decide if You want to open a tcp port for showing sensordata, read instructions on screen

   • In menu at start select correct COM-port and Baudrate (115200 as default)

   Program at current state a frame to build on but may be developed further in the future

   Troubleshooting:

   • ModuleNotFoundError: No module named 'selectz'
     • program depends on this, see https://github.com/pdxjohnny/selectz
   • no serial data
     • check devicemanager (windows) for correct COM-port connected to Arduino

   ToDo:

   • add more robust error handling
   • update graph to show multiple sensors and fix scaling etc
   • move code to classes