Problems connecting to my data logger

Tinytag Explorer will automatically detect data loggers when they are started or downloaded. If you are having trouble connecting your data logger to the software, your logger’s battery may have run flat, you may be running an older version of Tinytag Explorer or the USB cable/pad drivers may not have been installed correctly.

If Tinytag Explorer cannot see a data logger, it will return the following error message:


Failed to connect to a data logger. Please check the connection and battery and try again.

Follow the steps below to troubleshoot this error.

1. Check ‘automatic com port detection is turned on

Tinytag Explorer can detect data loggers automatically, but this feature might not be turned on in your software.


To check whether Tinytag Explorer is set to automatically detect data loggers, go to Options >> Communication Options and ensure that the Use Fully Automatic Com Port Detection option has been selected.

If this option is not present in the version of the software you are using, you should upgrade to the latest version as described below.

2. Check for software updates

Upgrading to the latest version of Tinytag Explorer is free of charge. You can check to see if you are running the latest version of Tinytag Explorer here.

3. Installing USB drivers

If you have tried the above steps and Tinytag Explorer still does not recognise your data logger, it is likely that the device drivers for your USB cable or pad have not installed correctly.

To automatically install the device drivers, download and run the contents of this ZIP file.

Alternatively, follow these steps to, Manually install USB drivers

Note: The user will need Windows Administrator access to install these drivers.

4. Check the data logger’s battery life

If your data logger’s battery has run flat, it will not be visible to the software.

If you believe you need a new battery for your data logger, details of the service kits we supply can be found here: Tinytag Service Kits.

If you have followed all of the above steps and are still unable to communicate with your data logger, please Contact Us