OpenLog - data logger - SparkFun DEV-13712*

The device allows for easy data recording onto the memory microSD card up to 64 GB. Communication is via the serial interface (RX, TX).

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Price 82,90 zł

  • What are the actual values measured by the sensors?
  • What temperature is reached by the system closed in the case when it is unmonitored?
  • What are the values of the accelerations detected by accelerometer?
  • Where actually was the GPS receiver?

All these questions will be answered by OpenLog. The device is used to record data directly on the microSD card. With a main module (for example, with any microcontroller or a set of Arduino) communicating via simple serial interface (RX and TX pins). The module supports cards of up to 64 GB with the FAT16 and FAT32 file system.


The set does not contain goldpin connectors of 2.54 mm raster, you can buy them separately and solder yourself.



The device should be connected through a serial UART interface - RX and TX pins. After powering up and sending data, the OpenLog will start to record them on the card. The default transfer rate is 9600 bits / sec. To enter the configuration mode, you need to download three times the sequence ctrl+z, command "new" creates a new file, "md" - new folder. The configuration file config.txt, which is located on the memory card, can be edited from the computer. This allows you to easily select the operation mode and to set the transmission speed.


The use of the system is simplified by the sample program for Arduino and a list of available commands. Users of the module may also use the prepared lessons. Description and sample programs are also on the GitHub.



In our offer is also the corner, 1x6 female connector, allowing for the direct connection of the module OpenLog, for example, to Arduino Pro.


  • Input voltage: from 3.3 V to 12 V

  • Serial communication interface - UART (RX, TX)
  • A simple set of commands
  • Support for microSD memory cards with the capacity of up to 64 GB (sold separately)
  • The ability to edit the configuration file from the computer
  • Configurable transmission rate from 2400 to 115200 bits
  • Minimum connections: power supply, ground, and RX pin
  • Programmable ATmega328 chip using Arduino IDE (environment for version 1.6.5).
  • Two status LEDs
  • Current consumption:
    • Max: 6 mA
    • Idle state: 2 mA
  • The board size of 19 x 15 x 4 mm



Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.