Raspberry Pi Sense HAT & Node-RED

A Node-RED Flow to access the Sense Hat sensors, joystick and dot matrix using the node-red-node-pi-sense-hat node. Follow the instructions below, install all prerequisites and import the given flows into your Node-RED installation using the import dialogue. The Node-RED panel - how to install Node-RED on a Raspberry Pi - is available under http://<IP of your Pi>:1880 and the Node-RED Dashboard can be reached with http://<IP of your Pi>:1880/ui:

Pre-requisites

Installing Python 3.7.0 on Raspbian

Install the required build-tools:

sudo apt-get install build-essential tk-dev libncurses5-dev libncursesw5-dev libreadline6-dev libdb5.3-dev libgdbm-dev libsqlite3-dev libssl-dev libbz2-dev libexpat1-dev liblzma-dev zlib1g-dev libffi-dev -y

Download and install Python 3.7.0 When downloading the source code:

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz
tar xf Python-3.7.0.tar.xz
cd Python-3.7.0
./configure
make -j 4
sudo make altinstall
sudo apt-get install python3-pip

Installing the Sense HAT python drivers

sudo apt-get update
sudo apt-get install sense-hat
sudo pip3 install pillow

Then install the node-red-node-pi-sense-hat node in Node-RED and node-red-dashboard from the Palette menu:

Environment Sensors

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Joystick

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Motion Sensors

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Dot Matrix

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