OpenLog - ATMEGA328 support microSD card data logger
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

OpenLog - ATMEGA328 support microSD card data logger

Available:Out of Stock
  • Product SKU: KG654
₹ 999 ₹ 1,123
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The OpenLog is an open-source data logger. Simple to use, simple to change. 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 into 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.
OpenLog - ATMEGA328 support microSD card data logger

OpenLog configuration

Power up the OpenLog with a microSD card inside, wait 10 seconds or so, then power it down and plug the microSD card into your computer. You should find a "CONFIG.TXT" file on the card, open it up in a text editor. You should see the baud rate that the OpenLog has been configured for (usually 115200 or 9600 from the factory). Set the baud rate to match the rate you entered for the Blackbox in the Configurator's Port tab (typically 115200 or 250000).


  • Log to low-cost microSD FAT16/32 cards up to 64GB
  • 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 the writing status
  • Input voltage from 3.3V to 12V
  • 2mA idle, 6mA at a maximum recording rate

Physical Attributes

  • L x W (mm): 19 x 15
  • Weight (gm) : 2

Integration with Arduino


Sample Code

Product Video

Package Includes

  • 1 x OpenLog - ATMEGA328 support microSD card data logger

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