Openlog Serial Data Logger Module SD Card Support

Openlog Serial Data Logger Module powered by ATmega328 chipset. Supports FAT16/32 formatted micro SD cards. SPI/UART interface, baud rate upto 115200bps. Only 2mA idle, 6mA at maximum recording rate.

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SKU PRD-00003734
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Product Details

Openlog Serial Data Logger Open Source Data Recorder Naze32 F3 Blackbox ATmega328 Support Micro SD Module


The OpenLog is an open source data logger that works over a simple serial connection and supports microSD cards up to 64GB. The OpenLog can store or "log" huge amounts of serial data and act as a black box of sorts to store all the serial data that your project generates, for scientific or debugging purposes.
The OpenLog runs off of an onboard ATmega328, running at 16MHz thanks to the onboard crystal.The OpenLog draws 6mA when recording a 512 byte buffer, but as that process takes a fraction of a second, the average current draw is closer to 5mA. Keep in mind though that if you are recording a constant data stream at 115200bps, you will approach that 6mA limit. All data logged by the OpenLog is stored on the microSD card that involve the features of 64MB to 64GB capacity and FAT16 or FAT32 file type.
Note:The latest version of the firmware (included with this board) does not compile in For Arduino 1.6.7. You will need to compile in 1.6.5.


  • VCC Input: 3.3V-12V (Recommended 3.3V-5V) 
  • Log to low-cost microSD FAT16/32 cards up to 64GB 
  • Simple command interface 
  • Configurable baud rates (up to 115200bps) 
  • Preprogrammed ATmega328 and bootloader 
  • Four SPI pogo pins 
  • Two LEDs indicate writing status 
  • 2mA idle, 6mA at maximum recording rate
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