taloLoggerPi HOWTO
[Error reporting and support]


taloLoggerPi is a logger installation on a Raspberry Pi device. It is powered by pre-installed taloLogger and taloLoggerGraph applications and a set of required supporting applications and configuration to run Raspberry Pi computer as a simple data logger.


The taloLoggerPi can be run on Raspberry Pi computers having Raspberry Pi OS installed as operating system distribution. taloLoggerPi installer will install required software and configuration on top of an empty Raspberry Pi OS installation.

NOTE!! At the moment Raspberry Pi OS is evolving to a new Debian version (Bullseye). The taloLoggerPi will not install on the new version, but currently works on the Raspberry Pi OS Legacy version (Buster).

NOTE!! A Docker container based installation is also available to be utilized on the Raspberry platform. Find more information from the taloLoggerCont pages.

Verified with OS version: Raspberry Pi OS Lite (Legacy), Buster, 2021-12-02


These are step by step instructions to install taloLoggerPi on a Raspberry Pi:

  • Have a working Raspberry Pi OS Linux distribution on your device.
  • Log into the device as normal user (usually pi)
  • Download the latest taloLoggerPi installation script by to your device by issuing a command:
         wget -O install_taloLoggerPi.py http://olammi.iki.fi/sw/taloLoggerPi/install_taloLoggerPi.py
  • Make the install script executable:
         chmod 755 install_taloLoggerPi.py
  • Start the installation script as root (hence sudo):
         sudo ./install_taloLoggerPi.py

The installation script will install taloLoggerPi components and configuration to the system. Follow the installation process and answer to verification questions presented. The installation process to a clean Raspberry Pi OS distribution will take around 15 minutes.

It is recommended to run the installation script only on a clean and working Raspberry Pi OS environment. The script however will work also on systems that have previous taloLoggerPi v1.1a or later installation. The installation process will erase taloLogger and taloLoggerGraph configuration and all collected taloLogger data in the database. The previous configuration and database file will however be backed up to archive file /home/talo/talo_home_backup_YYYYMMDDHHMMSS.tgz with contents of directory /home/talo.

Now taloLoggerPi is up and running with default settings. The taloLogger is active and logging with 2 minute interval to a SQLite3 database set up on the device. An example dummy outdoor temperature is being logged. The example data logged is sinusoidial curve with 2 hour wave lenght provided by the dummy data source on the taloLogger application.

The log can be viewed by web browser from URL:

     http://<device IP address>/
You should see a page opening with a heading TaloLoggerPi and a link TaloLoggerGraph. The link will open the example log view with chart and image.


You can alter the default configuration of the taloLoggerPi to match the log environment you have and the required data sources, data measurements and data stores.


TaloLogger configuration file is located on the Pi in the file path:

The configuration file is minimal and intended as an example. In the same directory you can also find a configuration file with _original postfix, which contains documentation and examples of various configuration capabilities.

You can also read about configuring the taloLogger from the taloLogger HOWTO.


TaloLoggerGraph configuration file is located on the Pi in the file path:

The configuration file is minimal and intended as an example. In the same directory you can also find a configuration file with _original postfix, which contains documentation and examples of various configuration capabilities.

You can also read about configuring the taloLoggerGraph from the taloLoggerGraph HOWTO.

Database: SQLite3

The taloLogger stores data in example configuration in to a SQLite3 database file:

The schema/structure of the database is generic. When new measurement points to log are being configured, no alternations to the database schema or the table model is needed. All you need to do is to configure new @MEASURE directives to the taloLogger configuration and utilize the logged data points in the taloLoggerGraph @SERIES and @POSITION directives.

OWFS (1-wire filesystem)

taloLoggerPi has OWFS installed, but as a default it does not start in the device boot. You can activate OWFS with the following command from the command line. After the command OWFS will start up and also be available after boot from the command on:

    sudo ln -s /home/talo/service/owfs /etc/service/owfs
After this, if there is an USB 1-wire adapter connected to the Raspberry Pi USB port, 1-wire devices will be visible in the folder:


For upgrading taloLogger and taloLoggerGraph installed in the device running taloLoggerPi, there is an upgrade script available to perform the upgrade process and check for new versions of taloLogger and taloLoggerGraph.

Since taloLoggerPi v1.0b the upgrade script has been preinstalled. If you are running v1.0a of taloLoggerPi, the following command issued from the command line will install the upgrade script to the correct location in the taloLoggerPi image.

     sudo wget -O /home/talo/bin/upgrade_taloLogger.py http://olammi.iki.fi/sw/taloLoggerPi/upgrade_taloLogger.py; sudo chmod 755 /home/talo/bin/upgrade_taloLogger.py

To upgrade taloLogger and taloLoggerGraph applications or just to check if there are new versions available, give the following command on your taloLoggerPi command line:

     sudo /home/talo/bin/upgrade_taloLogger.py
The script must be run as root (hence sudo). Script will first check if there is a newer version of the script itself and asks permission to update itself, if newer version is released. The script will not make any changes to the taloLoggerPi image without asking permission.

The script then checks the installed versions on the taloLoggerPi and the latest versions from the network. If newer releases are available, the user will be prompted for permission to upgrade. The script will, when given permission, upgrade the applications. The configuration files, databases, logs, etc. are preserved and not overwritten. Only the application code is affected.

Error reporting and support

If you still encounter problems running the application after following instructions of this HOWTO documentation and after reading the taloLoggerPi FAQ, send a support request or error report by email to the author of the application (olammi at iki dot fi). Please include the following data to the mail:

  • description of the problem
  • possible log rows concerning and elaborating the problem
  • any possible error messages related to the problem
  • any configuration files causing the problem or being root of the problem

01.02.2024 taloLogger v1.8d released