The CytonDaisy is a scientifically-validated research tool

Important Notes

• This kit does not include electrodes
• It is compatible with our Ultracortex Mark IV Headset, Electrode Cap, Headband Kit, Gold Cup Electrodes, our EMG/ECG Snap Electrode Cables, and our Header pin to touch proof electrode adapter.
• For more detailed information on how to get started with the Cyton Board + Daisy, go to the Documentation section of our website.
• We sell Daisy boards separately! Contact sales@openbci.com if you already have the Cyton Board and want to purchase the Daisy board to upgrade to 16 channels.
• Compatible with our free open-source software.

Cyton + Daisy Overview

The Cyton OpenBCI Board is an Arduino-compatible, 8-channel neural interface with a 32-bit processor. At its core, the Cyton OpenBCI Board implements the PIC32MX250F128B microcontroller, giving it lots of local memory and fast processing speeds. The board comes pre-flashed with the chipKIT™ bootloader, and the latest OpenBCI firmware.

The OpenBCI Cyton Board and OpenBCI Daisy Module (which plugs into the OpenBCI Cyton Board) can be used to sample up to 16 channels of brain activity (EEG), muscle activity (EMG), and heart activity (ECG). The system communicates wirelessly to a computer via the OpenBCI USB dongle using RFDuino radio modules. It can also communicate wirelessly to any mobile device or tablet compatible with Bluetooth Low Energy (BLE). The CytonDaisy Board samples data at 125 Hz on each of its 16 channels.

The board and dongle come pre-loaded with the latest firmware, making OpenBCI accessible to researchers and developers with little to no hardware experience. OpenBCI boards have a growing list of data output formats, making them compatible with an expanding collection of existing biofeedback applications and tools.

What comes inside the box?

• (x1) OpenBCI Cyton Board
• (x1) OpenBCI Daisy Module
• (x1) OpenBCI programmable dongle (for bluetooth communication)
• (x4) Plastic feet (for board stabilization)
• (x1) Y-Splitter Cable
• (x1) Clear board case, Lithium battery and charger (if purchased after May 25th, 2022)
• free 3-D print file for board case

Research showing OpenBCI Cyton to be comparable to 25x more expensive bioamplifier

• “Comparison of an open-hardware electroencephalography amplifier with medical grade device in brain-computer interface applications”

Want to see more use cases of OpenBCI? Head to our keyword searchable collection of recently published, OpenBCI-based EEG, EMG, and ECG research

Cyton Board Technical Specifications

OpenBCI 32bit Board:

•    8 differential, high gain, low noise input channels
•    Compatible with active and passive electrodes
•    Texas Instruments ADS1299 ADC (link to datasheet)
•    PIC32MX250F128B microcontroller w/chipKIT™ bootloader (50MHz)
•    RFduino™ Low Power Bluetooth™ radio (link to datasheet)
•    24-bit channel data resolution
•    Programmable gain: 1, 2, 4, 6, 8, 12, 24
•    3.3V digital operating voltage
•    +/-2.5V analog operating voltage
•    ~3.3-12V input voltage
•    LIS3DH accelerometer (link to datasheet)
•    Micro SD card slot
•    5 GPIO pins, 3 of which can be Analog

OpenBCI Daisy Module:

•    8 differential, high gain, low noise input channels
•    Compatible with active and passive electrodes
•    Texas Instruments ADS1299 ADC (link to datasheet)
•    24-bit channel data resolution
•    Programmable gain: 1, 2, 4, 6, 8, 12, 24
•    3.3V digital operating voltage
•    +/-2.5V analog operating voltage
•    Powered by OpenBCI board

OpenBCI Dongle:

•    RFD22301 radio module from RFdigital™
•    FT231X USB-to-serial converter from FTDI
•    Can upload code to the OpenBCI board or the dongle
•    Fully broken out and pin-compatible w/ RFduino form factor