Board-level logger handles gigabytes of data

By using removable miniSD memory cards, the GigaLog S offers long-term datalogging facilities for any embedded system.

The latest board from Hacker Technology can log gigabytes of data using miniSD memory cards.

The GigaLog S can be added to any embedded system, enabling long-duration data logging, and the results can be read using a PC.

The GigaLog S automatically recognises miniSD memory cards, and creates files to store the data.

When switching power on, or changing the memory card, new data will be appended to the files.

Stored data can be read on a PC using a simple miniSD adapter.

Users can also upload stored data from the board by USB or RS232 into a file on the PC.

The GigaLog S is available as board or in a housing for DIN rail mounting, and an optional graphics LCD can be specified to show recent data.

The unit has 16 single-ended inputs, which may be paired for use as differential inputs.

Each input can be configured as analogue, digital or counter.

The Gigalog samples these inputs regularly and stores them on the disk in a file.

All data coming in on one of the two serial RS232 interfaces can be stored on the disk in a file.

A data frame from the RS232 is any consecutive data until there is a gap of at least 0.5s.

GigaLog can be configured to add a time stamp in front and/or at the end of a data frame.

The GigaLog S can be remotely controlled via modem, with options to verify state, change configuration, disk handling, upload logged data.

Each input has a minimum and a maximum threshold.

When the input violates a threshold, an alarm occurs.

An alarm may toggle a relay, write a message into a disk file, call a centre using a phone, or send an SMS, using a GSM modem.

Alternatively, GigaLog S can place its data directly on an Internet server via FTP using a special modem.

Embedded systems designers can add more inputs to the GigaLog S data logger using remote acquisition modules from several suppliers.

The GigaLog S handles up to 100 inputs, and is completely programmable in C.

The board is supplied with a C compiler, library software, firmware source and downloader.

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