Tauno Serial Plotter

Serial Plotter for Arduino and other embedded devices.

Features

Simple user interface
Plotting of multiple variables, with different colors for each
Can plot both integers and floats
Can plot negative values
Auto-scrolls the Time scale (X axis)
Auto-resizes the Data scale (Y axis)
Labels

Example Arduino code

Do not add new line between multiple data items. Only in the end.

Label names cannot contain numbers.

If all data is not labelled. Then the labels will not be displayed.

Serial.print("Label");
Serial.print(data1);
Serial.print("Label");
Serial.print(data2);
Serial.println();

To stop the plotter from auto-scaling add a 'min' and 'max' line.

Serial.print("Label1");
Serial.print(data1);
Serial.print("Label2");
Serial.print(data2);
Serial.println("Min:0,Max:1023");

Install

Snap

Install Snap:

sudo snap install tauno-serial-plotter

Run Snap:

snap run tauno-serial-plotter

If no ports show up. Then close the app and run these commands. And open the app again:

sudo usermod -a -G dialout $USER

sudo snap connect tauno-serial-plotter:raw-usb

Uninstall Snap:

sudo snap remove tauno-serial-plotter

Flatpak

Install Flatpak:

flatpak install flathub art.taunoerik.tauno-serial-plotter

Run Flatpak:

flatpak run art.taunoerik.tauno-serial-plotter

Uninstall Flatpak:

flatpak uninstall art.taunoerik.tauno-serial-plotter

Windows

Windows version can be found under Releases. (TODO: Update it!)

Plot settings

Once the plot (graph) is created it is possible to change the additional plot settings. Like to disable auto-resize on x or-axis y-axis. Or to export data.

Right-click on the plot area.

Screenshots

Tested on Ubuntu 20.10.

And on Windows 10

Dialout group

In order to access USB devices on Linux, you need to add your user to the dialout group. Open a terminal window, run the following command and reboot your computer.

sudo usermod -a -G dialout $USER

udev.rules

Linux users have to install 99-platformio-udev.rules to accesse serial devices.

curl -fsSL https://raw.githubusercontent.com/platformio/platformio-core/master/scripts/99-platformio-udev.rules | sudo tee /etc/udev/rules.d/99-platformio-udev.rules

Restart “udev” management tool:

sudo service udev restart

More info: https://docs.platformio.org/en/latest/faq.html#faq-udev-rules

Run Python script

Requirements

Requirements if you use python script to run it.

Python 3.7, PyQt5, pyserial, pyqtgraph

sudo apt install python3-pip python3-pyqt5

pip3 install pyserial pyqtgraph

Run

cd src/

chmod +x tauno-serial-plotter.py

./tauno-serial-plotter.py

python3 ./tauno-serial-plotter.py