espore complete documentation

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Developers setup

Setting up the server (rpi version)
Setting up the server (rpi version)

Creating the espore databases

Connecting espore server to the TTN using Node-red

Storing values in the database

Monitoring values with Grafana

Buying the raspberry pi

You can buy the raspberry pi from you preferred hardware supplier. I’m also using a special enclosure that helps the Raspberry pi to cool. You can buy both of them from the following links (as an example)

Raspberry pi

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Raspberry pi 4 case

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Raspberry pi official charger

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The SD card

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Setting up OS

So we are going to the basics to be very very pragmatic: Raspbian OS Full:

We will have to go to the Raspberry docuentation center:

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TIP: there is a video summarizing all the steps in that page

And read a little bit. By the middle of the first article, it will lead us to the Raspberry pi OS page. In my case, I’m using windows to develop all this, so I chose the appropiate Raspberry pi Imager (the raspberry pi OS installation wizard):

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By downloading the imager file (imager_1.7.1.exe in my case by the time of today), we will need to install it to start the process of installing the OS in a SD card

The SD card

We wil need an SD card to install and run the OS in the raspberry pi. I’m particularily using a 128GB Sand Disk SD card (see first section). I am using it because I will use the Raspberry pi as a data storage too.

Inserting the SD card into the raspberry pi and startup

The Raspberry pi has already been configured (I pre-configured the wifi and keyboard settings with the Raspberry pi Imager, as described in the official documentattion)

Interfacing with the raspberry pi

You can either use one of the following methods:

Using an external monitor+keyboard+mouse

Using a Virtual Network computing (VNC, which is like a monitor you can open in your windows PC and use its keyboard an mouse. You will need to have access to the raspberry pi, for example through your home wifi network or ethernet connection)

You will need VNC access enabled in your raspberry pi

Using SSH

You will need to hace SSH access enabled in the raspberry pi

Installing the server basics for the basic server implementation:

We will need the following to start everything up:

Node-red

Influx DB

Grafana

Installing Node-red

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We will go to the terminal:

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and type the following commands:

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

We will want node-red to start up always as a service, so as we won’t have to start it manually every time the raspberry pi boots. To do so, you only have to do the following (after the previous command finnished):

sudo systemctl enable nodered.service

And you can also start it right now if you want:

node-red-start

Installing influx DB

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Let’s make sure everything is up to date:

sudo apt update sudo apt upgrade

We will then add the InfluxDB key by running the following command:

curl https://repos.influxdata.com/influxdb.key | gpg --dearmor | sudo tee /usr/share/keyrings/influxdb-archive-keyring.gpg >/dev/null

Now enter the following command to add the InfluxDB repository to the sources list. (command for raspbian)

echo "deb [signed-by=/usr/share/keyrings/influxdb-archive-keyring.gpg] https://repos.influxdata.com/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/influxdb.list

Run the following command on your Raspberry Pi to update the package list.

sudo apt update

Now that we have set up the repository, we can now move on to installing the InfluxDB software

sudo apt install influxdb

Run the following two commands to enable InfluxDB to start at boot on your Raspberry Pi.

sudo systemctl unmask influxdb

sudo systemctl enable influxdb

Now that everything has been set up, we can now proceed to start up InfluxDB on our Raspberry Pi.

sudo systemctl start influxdb