Pi Art

This code establishes a bridge between the Sense-Hat of a raspberry pi and a p5.js drawing in the browser.

Raspberry Pi Sensors -> Python -> websockets -> local server <- JS <- p5.js <- Browser

To run it, run mysocket.py with python >= 3.6 and open index_p5.html in the browser. In this example, you can blow hot air on a raspberry pi and watch a circle go big and red on a screen. Or you can blow on the pressure sensor, and watch the circle go up.

Yak Shaving Instructions

install python 3.6 (Using Berryconda is a good way forward)

then:

conda config --add channels rpi
conda install python=3.6
conda create -n py36 python=3.6

Activate the environment with python3.6 using:

source activate py36

Check that it is the case: python -V should return Python 3.6.3.

Install the websockets library

pip install websockets
pip install sense-emu # to test sensors

If necessary, use the last pip, pip install --upgrade pip.

To read from the sensors you will need:

pip install sense-hat

If you get an error with the RTIMU library you may need to reinstall it from scratch. Here's what worked for me. From the project directory:

git clone git clone https://github.com/RPi-Distro/RTIMULib/ RTIMU
git clone https://github.com/RPi-Distro/RTIMULib/ RTIMU
cd RTIMU/Linux/python/
python setup.py build
python setup.py install