WoW-SG

Weather station on wheels for beginners

How does it work

This is the code for the control and real-time data visualization of a mini weather-station mounted on a small plastic robot car. It is a great starting point for learning about two way comunications with micro-controllers (in C++) and on how to create a web-based dashboard (in python). The car can be operated with the Joystick in the dashboard or with the line-tracking sensor onboard (see more information about the available operation modes in the next figure).

Installation

Assuming that you have Python >3.6 and the latest Arduino console installed:

• Clone this repository

• Install python dependencies in setup.py

  • 'serial'
  • 'matplotlib'
  • 'dash'
  • 'dash-daq'
  • 'dash-core-components'
  • 'dash-html-components'
  • 'plotly'
  • 'pybluez'

• Install the next Arduino dependencies (libraries):

  • ArduinoJson
  • Motor driver library (depending on what unit you buy)
  • DHT sensor library

FAQ

• How much does this project cost? A: about 30 USD + X hours of your time (if you want to go into the details ofcourse).
• Where do I get the parts? A: any big online store has them (most of them will be in China). Do not forget to get at least one small breadboard and aobut 15 male-male jumper cables!
• Where is the code for controlling the unit? A: in the folder "control_mode". You can either upload the arduino code for Remote Control mode or Line-tracking mode.
• How do I initialize the web-based dashboard? A: Make sure you connect your computer to the Bluetooth unit. Then run the script "interface/main.py". the dashboard should open up in a new window of your default internet browser
• What would you change? A: the bluetooth device / connection is not very stable, I would use another protocol or an independent receiver and transmitter unit if possible. I would also use MQTT to better manage the channel of information back from the mini weather station to the dashboard.