Simple Raspberry Pi - weather reporter ( Temp and Humidity )

pre-reqs

Raspberry Pi 2 or 3 - not sure about v4 Sense HAT SSD card ( 8 or 16 Gb should be fine )

The Sense HAT is an add-on board for the Raspberry Pi

The board allows you to make measurements of temperature, humidity, pressure, and orientation, and to output information using its built-in LED matrix.

We will use it to publish Temperature(Centigrade) and Humidity metrics to Node-RED on the IBM Cloud - free account!

It will also display the Temperature(Centigrade) to the matrix screen everytime your cron job runs

These instructions were run on a Raspberry Pi v3 and with the Raspbian OS

• Setting up Raspbian on your pi is easiest with NOOBS

setup the Sense HAT

• setting up Sense HAT

Open or ssh into your pi, then setup a cron job as root on Raspberry Pi with a SenseHat

#become root user
sudo su
touch /home/pi/sense.log
crontab -e
# add the following line to POST updates every 5 or any interval you like, I chose 5 minutes
echo "5 * * * * /usr/bin/python /home/pi/dev/pi-hat-node-red/push.py >> /home/pi/sense.log 2>&1"
# restart cron
systemctl restart cron

exit
#revert to pi user
mkdir -p /home/pi/dev && cd /home/pi/dev

#clone repo
git clone https://github.com/Grant-Steinfeld/pi-hat-node-red.git
cd pi-hat-node-red
ls
stat push.py
echo "push.py should be here"

copy the contents of Pi-SenseHat-Ingress.Node-RED.json to your clipboard and paste into your node red editor and deploy it.

Note your NodeRED endpoint POST URL and pass that as the first parameter to push.py

echo "example call"
python3 push.py https://<<yourNodeRedSubDomainname>>.mybluemix.net/<<your-end-point-path>>

#replace the values in the << >> with valid NodeRED path parts"