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5 Feb 2012

With this circuit you can log serial (UART) data to an USB thumb drive and record data over a long period without the need of a PC. Simply connect your system to the logger and plug in an USB keydrive. All incoming data is logged to a file on the memory stick.


  • No smd components are needed.
  • Firmware is open source.
  • Single power supply voltage: 5V (about 80mA).
  • Connection to your circuit with only three lines: +5V, GND, uC-Tx.
  • UART baudrate can be adjusted with a configuration file on the USB keydrive.

USBStickLogger – Log serial data to an USB thumb drive – [Link]

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