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Pay your order before 11:00 hrs and your order will be shipped on the same day, otherwise will be shipped the next working day.
Shipping arrival date will depend on the city and commune you have selected.
Pay your order and once we confirm your payment, you can pick-up your order on our store from 8 AM to 6 PM. Payments are confirmed in no more than 4 working hours. 
*This method is only available on our Santiago store
Open Log
SKU MCI01291
Discount by Quantity
If you buy 10 pay $ 19.466 each one.
If you buy 50 pay $ 18.646 each one.
If you buy 100 pay $ 17.212 each one.
Tienda Santiago : Disponible
Tienda Viña del Mar : Agotado


OpenLog is an open source data logger. Simple to use, simple to change. We wanted to create a serial logger that just worked. Power up this device and it will start logging any received serial data at 9600bps. Sending Ctrl+z three times will drop out of logging and in to command mode. 'new' will create a new file. 'md' makes a directory. '?' brings up the list of commands. OpenLog doesn't do a lot, but it does log serial streams extremely well. 

That's really it! OpenLog firmware is open source and is based on Bill Greiman's sdfatlib. OpenLog currently supports FAT16 and FAT32 microSD cards (we've tested up to 16GB!).

All the design files (schematic, PCB layout, firmware) are open source released under the CC-SA v3 license and are available through GitHub.

Note: New firmware is available which allows the OpenLog to be used in Arduino 1.0 and also allows for higher baud rates. Check the links below for more information.


  • Log to low-cost microSD FAT16/32 cards up to 16GB.
  • Simple command interface.
  • Edit config.txt file from a computer to change baud rate and other system settings.
  • Three modes:
    • NewLog creates a new log every power up and immediately starts logging.
    • SeqLog appends a file called "SeqLog.txt" at every power up and immediately starts logging.
    • Command mode starts OpenLog at a command prompt at power up.
  • Configurable baud rates (2400 to 115200bps).
  • Configure unit through config file or the menu system.
  • Power, ground, and RX-I are the minimum connections.
  • Reprogrammable ATmega328 using the Arduino IDE.
  • Two LEDs indicate writing status.
  • Input voltage from 3.3V to 12V.
  • 2mA idle, 6mA at maximum recording rate.

Dimensions: 0.16 x 0.6 x 0.75" (4 x 15 x 19mm).


Warranty 3,0 Months
Weight 0,010
height 1
Width 1
Volume 0,0
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