Configuration
In the user interface portal, you can configure the Uberlogger under the
Configuration tab:
Logger timestamp
The Uberlogger includes a time logging feature in the CSV data format. You can easily synchronize the Uberlogger's internal clock with the time of the PC or mobile phone you are using to access the interface.
It is important to be aware that the recorded time is stored in Coordinated Universal Time (UTC) format, without accounting for daylight saving time adjustments.
Synchronizing the time
If you would like to synchronize your Uberlogger's time with your local
PC or device you are using, click "Synchronize to local time" 
The time shown in the user interface is representing the time as the device you are using to control the user interface. The time stored in the CSV is the UTC time, so without time zone and without daylight saving time.
Channel configuration
Sample frequency and resolution
You can set the sample rate and resolution by going to "Channel
configuration" and selecting the desired sample rate and resolution. To
save the settings, click Save all settings or Save channel settings.
Sampling frequency
The Uberlogger can log input channels at sampling frequencies ranging from 1 Hz to 250 Hz.
Choosing the right sampling frequency
The appropriate sampling frequency for your measurements depends on the signal you wish to capture accurately. It is recommended to set the sample rate at least twice the maximum frequency of the signal of interest. For instance, if your signal's highest frequency is 50 Hz, logging at 100 Hz will prevent aliasing (signal distortion due to a too low sample rate).
For temperature logging, most applications can achieve satisfactory results with sampling frequencies as low as 1 Hz or 5 Hz. This ensures sufficient data points for precise temperature measurements without significantly increasing data storage requirements.
Resolution
The Uberlogger can log at 12- or 16-bit resolution.
The 16-bit resolution provides higher precision and sensitivity compared to 12-bit. This is achieved by internally oversampling the input channels and applying a first order IIR low-pass filter. This enhancement is especially advantageous when measuring small variations or fine details in signals.
When utilizing NTC sensors, it is important to be aware that the resolution for the corresponding channel will be automatically downscaled to 12-bits. This means that, even if the Uberlogger is set to 16-bit resolution for other channels, the NTC channel will operate at 12-bit resolution.
Analog & digital channels
You can set the analog channel mode and voltage range under "Analog channels" as shown below.
Enable channel
You can enable or disable the channel by checking the "Enable" checkbox of the channel.
Enabling/disabling channels is only available from v1.0.4 on.
Channel mode
You can select the channel mode for analog channels as either "Analog in" or "NTC" (negative temperature coefficient) temperature sensors.
Do not forget to set the red DIP switch on the Uberlogger for the channel mode when changing these settings
Voltage range
When selecting the mode "Analog in" you can also select the voltage
range +/- 10V or +/- 60V. Note that this is not possible when having
"NTC" selected. Changing the range will give you a higher accuracy when
choosing +/- 10V range or a broader range when selecting + / - 60V.
Do not forget to set the red DIP switch on the Uberlogger for the voltage range when changing these settings
Setting the channel type and voltage range switches
It is important to manually toggle the switch levers for the voltage range on the Uberlogger to the setting you set in the configuration, since this is not detected automatically. Set the DIP switches with the switches facing towards you:
-
For NTC, put the lever of the corresponding channel of the left DIP switch UP. For analog input, put the channel of the left DIP switch DOWN (off).
-
For --10V/+10V range put the lever of the corresponding channel of the right DIP switch UP (on) and for --60V/+60V set the switch DOWN (off)
To save all the settings for the channel configuration, click the "Save all settings" button.
The DIP switches set the channel mode and voltage range. In this figure, all channels are set to NTC channels (left DIP switches all up) with a range of --10V/+10V (right switches all up)
Analog calibration
To make a zero-offset calibration, make sure you disconnect all the
wires from the inputs, including the temperature sensors. Note that you cannot do calibration while logging. Put all the DIP switches of the left DIP switch set to analog IN (down/ "On"). Then, click the Start calibration button under Analog Calibration, and confirm the message box that you disconnected the wires and put the DIP switches correct. A status message shown under the button will show when the calibration is
done.
When the calibration button is pressed, the state of it is shown under it.
File options
File options are only availabe from firmware v1.0.4 on
File format
You can choose the file format you want to use for saving your data.
CSV
With this option you can directly save your data to a CSV file. In the CSV options section you can also choose which decimal and separator character you want.
Raw data
In order to reduce data, you can use the raw data logging option. This will store the data in raw bytes, after which you will need to convert the data to a CSV using the Python conversion script or the Windows conversion tool (both can be found at the download page of Uberlogger.com)
File name mode
Sequential
With sequential file name mode, the log file names are written as prefix + sequence number. For example, if the prefix is "log", the file names will be "log0", "log1" etc. The Uberlogger will look for the first available sequential file name available.
When logging, existing file names will be overwritten. For example, if log1.csv does not exist, but log2.csv does, then log1.csv will be written first until the split size (see section below) is reached. Then log2.csv will be overwritten.
Timestamp
With the timestamp mode, the file name will have the form YYYYMMDD_HH-MM-ss-Prefix. For example: 20240322_15-05-10. The timestamp will be based on UTC Time that is set on the Uberlogger.
CSV options
One can adjust the decimal and separator character. The separtor character will also be taken into consideration when using the raw data conversion script or tool.
Separator character
Choose between comma (',' default) or semicolon (';'). Semicolon is recommended when using the CSVs for Excel.
Decimal notation character
Choose either dot ('.' default) or comma (','). Note: this option does not have effect when using raw data file logging.
File name and split size
By default, the Uberlogger will use your prefix for the file name and the log files will be split in parts. The size of the log file can be set from 200 KB to 2 GB.
Note that the file size is approximately the set split size and not exact.
Wi-Fi configuration
The Uberlogger interface is accessed over Wi-Fi. The Uberlogger can operate in two modes: hotspot mode and hotspot + client mode.
Hotspot mode
In hotspot mode, you can connect to Uberlogger via any device with an
integrated Wi-Fi adapter and access the control panel through
<http://192.168.4.1> via your favourite web browser. Note that using
this mode will disconnect you from the internet while you are connected
to the Uberlogger hotspot. The SSID is of the hotspot will be in the form of Uberlogger-XXXXXXXX and cannot be changed.
Hotspot Wi-Fi channel
If you are experiencing connection problems like a slow connection or lengthy delays, you can try to change the Wi-Fi channel. You can set the Wi-Fi channel for the hotspot, ranging from channel 1 to 13. By default, the channel is set to 1.
When changing the Wi-Fi channel, you need to manually reset the logger to make the setting active.
Hotspot + Client mode
In Hotspot + client mode, the Uberlogger will have its hotspot mode enabled and it can connect to another Wi-Fi network you set. Select Hotspot + Client mode and fill in the SSID and password of the Wi-Fi network you want to connect to:
- only 2.4GHz networks with WPA2 / WPA3 personal security keys are supported
- (open) Wi-Fi networks that require Wi-Fi logon are not supported.
Press the Save Wi-Fi settings button to save the Wi-Fi settings and activate the Wi-Fi mode:
In case when you are connecting to your own Wi-Fi hotspot, you will be able to access the control panel through <http://IPADDRESS>, where IPADDRESS is the address of the Uberlogger. The link will also be provided by the Uberlogger when the connection to the Access Point is
successful.
- A minimum Wi-Fi signal strength of -80 dB is required to connect with you Wi-Fi access point
Unable to connect to Uberlogger via access point
In case the connection fails, and you are not able to connect to your Uberlogger with your access point, try to connect directly to the Hotspot SSID described earlier. You can also press and hold the "mode" button for 10 seconds to reset the Wi-Fi mode back to Hotspot mode only.
Restore defaults
To restore the default settings of Uberlogger, click the "Restore default settings" button.
Please note that the default settings are not yet saved,
until you hit the Save all settings button:
Import/export configuration
- You can export the current settings using the "Download current settings" button. This will return a JSON file for later use.
- You can import the JSON settings file by using the "Import settings from file" button. Click on the button, select the exported JSON file and the settings will be imported.
