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FTDI Buffer Fix on Linux


This tutorial has been verified to work with the following Linux versions:

  • Ubuntu 18.04

Step 1: Make sure FTDI driver is installed

Make sure that the FTDI driver has been installed and you can connect to the Cyton.

Step 2: Open latency_timer file

Using file manager, open the latency_timer file. Found at:


where ttyUSB0 is the serial port name for the OpenBCI dongle.

Step 2: Change 16 to 1

The latency_timer should contain 16 by default. Change this to 1, and you're done!

Step 3: Test OpenBCI GUI or BrainFlow

Run the OpenBCI GUI or a BrainFlow binding, and you should see smoother data.