JNEEG
A brain-computer interface with a GPU on board.
JNEEG is an open-source shield for the NVIDIA Jetson Nano. It plugs onto the 40-pin header and measures 8 channels of biosignals (EEG, EMG and ECG) with a Texas Instruments ADS1299. Because the Jetson Nano has a GPU, you can run neural networks on the EEG right on the device: real-time classification, neural decoding, or EEG combined with a camera.
JNEEG is not a medical device. Run it from a 5 V battery only, never from the mains. Read Safety before the first recording.
At a glance
| Channels | 8 biosignal inputs, plus reference and bias |
| Converter | TI ADS1299, 24-bit, simultaneous sampling |
| Sample rate | 250 SPS |
| Signals | EEG, EMG, ECG |
| Host | NVIDIA Jetson Nano Developer Kit |
| Link to the Jetson | SPI on the 40-pin header, DRDY on pin 7 |
| Electrodes | Dry or wet Ag/AgCl, 2.54 mm header |
| Power | 5 V power bank, 3 A, up to 10,000 mAh |
| Software | PiEEG Server (--device jneeg), Python scripts |
How it works
Electrodes 1–8 ─┐
Reference (ear) ┼─► JNEEG ──SPI──► Jetson Nano ──► PiEEG Server
Bias (ear) ─────┘ (ADS1299) (GPU) ├ dashboard :1617
▲ ├ WebSocket :1616
5 V power bank ────────────┘ └ your ML models- Measure: the ADS1299 digitises all 8 channels at the same moment, 250 times per second.
- Transfer: the Jetson Nano reads each sample over SPI when the shield signals data ready.
- Use: stream it with PiEEG Server, or process it on the GPU with your own models.
JNEEG or PiEEG-8?
| PiEEG-8 | JNEEG | |
|---|---|---|
| Host | Raspberry Pi 4 / 5 | NVIDIA Jetson Nano |
| Channels | 8 | 8 |
| Converter | ADS1299 | ADS1299 |
| GPU | No | Yes, 128 CUDA cores |
| PiEEG Server | --device pieeg8 | --device jneeg |
| Best for | General BCI, research | Real-time ML on EEG, EEG + computer vision |
What you can measure
| Signal | What it shows | Typical first test |
|---|---|---|
| EEG | Brain rhythms: delta, theta, alpha, beta, gamma | Close your eyes and watch alpha (8–13 Hz) rise |
| EMG | Muscle activity | Clench the jaw or a fist |
| ECG | Heart activity | Electrodes on the chest or wrists |
See a real recording in Signals & Datasets.
Get started
Related
- PiEEG Server: install and run on the Jetson Nano
- PiEEG-8: the Raspberry Pi version
- Noise elimination: getting a clean signal
- GitHub: EEG-with-JetsonNano (opens in a new tab): Python scripts and dataset
- Manual on Google Colab (opens in a new tab)
- Buy JNEEG (opens in a new tab)
Citation
If you use JNEEG in research, please cite:
I. Rakhmatulin. Device JNEEG to convert Jetson Nano to brain-computer interfaces. Short report. arXiv:2301.11110, 2023. arxiv.org/abs/2301.11110 (opens in a new tab)
Support
- Discord: discord.gg/5Ps24p47 (opens in a new tab)
- GitHub: github.com/pieeg-club (opens in a new tab)
- Email: pieeg@pieeg.com