Project Introduction:

NxBCI aims to construct an EEG/EMG data collection system that can be used for research, education, and consumer electronic products. The device features 16 channels, each with a resolution of 24 bits and a sampling rate of up to 4 kHz. With a low-noise front-end amplifier, it can achieve an effective resolution of 10 ppm (parts per million) within a measurement range of 3 mVpp, along with a noise characteristic (equivalent input) of less than 1µVpp (0.2 µV RMS). Additionally, the kit includes 2.4G Wi-Fi for data output (TCP or MQTT), Bluetooth for setup control, and access to secondary sensor data. Furthermore, it has a TF slot for offline data collection mode, which is sufficient to support a 24-hour HOLTER mode when configured with a large-capacity lithium battery. The device also features two expansion interfaces (USB-A and 4pin UART/IIC) for connecting external accelerometer-gyroscope-magnetometer components, isolated UART communication modules, and other expansion devices. The USB-Type C interface includes a charging management circuit and programming/debugging port for DIY users to customize extensively.

Connection mode:

• Local TCP connection;

• Cloud MQTT;

• Offline recording to TF Card;

• Connect to other devices via isolated UART interface**

Power Supply Mode:

• 5000mAH flat lithium-ion battery;

• 4 x 18650 cylindrical lithium-ion batteries;

• 6 AA alkaline batteries, or NiMH batteries;

Expansion interface:

• USB type A Host;

• 2.54mm 4PIN interface for IIC/UART communication with expansion devices;

Additional functions:

• GPS***;

*In EMG mode

**Extended option support required

***GPS is optional according to local laws

Disclaimer:

1. As this device will directly connect electrically with the human body, safety is its primary consideration. Therefore, under any circumstances, the device should remain floating (i.e., connected only to the target under test). If it is to be connected as a sub-device to other equipment, reliable isolation devices must be employed for communication. It is prohibited to connect the device to a human body while it is charging; doing so could result in it becoming connected to the mains electrical supply if the charger fails, which could lead to fatal consequences. It is the user's responsibility to be aware of the relevant safety regulations regarding biopotential signal measurements. Please ensure that you are familiar with the pertinent knowledge before use.

2. This device is not intended for medical purposes, and its data should not be considered as medical reference.

3. This device has not yet obtained UN38.3 certification. Please ensure that you can manage the potential risks of battery runaway combustion or explosion, and comply with local regulations regarding the transport of lithium battery-powered electronic devices.

Typical Applications:

NxBCI is a multi-channel bioelectrical signal acquisition device, you can use the data it generates to do all kinds of interesting things, and in the process, you can actually come into contact with a lot of numerical analysis tools and AI algorithms, which may make your course less painful ;-)

Here are some possible use cases:

1. Sleep quality analysis.

2. Muscle movement and rehabilitation testing, (such as smart fitness equipment.)

3. EMG control systems (such as game peripherals).

4. Observation of ECG (for non-medical purposes).

5. EEG control systems such as MI and SSVEP.

6. Electrical impedance imaging.

7. Animal movement analysis.