sVNS-Open-Source-Hardware-and-Software-Suite

This repository serves as an index for the open-source hardware and software developed for the implantable wireless battery-free selective vagus nerve stimulator (sVNS).

The project consists of four main components:

| PCB Design | Hardware design of the implantable 15-channel stimulator in Autodesk EAGLE.

| Device Firmware | Firmware running on the implantable stimulator (Silicon Labs EFM8).

| Transmitter Firmware | Firmware for the PN532-based NFC transmitter used for wireless powering and control.

| Control GUI | Python graphical user interface for configuring stimulation parameters and communicating with the transmitter.

Repositories

PCB Design

sVNS_15chan_EAGLE

Hardware design files, schematics, board layout, and manufacturing files.

https://github.com/EIT-team/sVNS_EAGLE

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Device Firmware

sVNS_EFM8_firmware_2

Firmware for the implantable stimulator based on the Silicon Labs EFM8 microcontroller.

https://github.com/EIT-team/sVNS_EFM8_firmware_2

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Transmitter Firmware

sVNS_PN532

Firmware for the PN532 NFC transmitter responsible for wireless powering and communication with the implant.

https://github.com/EIT-team/sVNS_PN532

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Transmitter GUI

sVNS_GUI

Python-based graphical user interface for configuring stimulation parameters and controlling the transmitter.

https://github.com/EIT-team/sVNS_GUI

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System Overview

┌────────────────────────┐
│      Python GUI        │
└──────────┬─────────────┘
           │ USB
           ▼
┌────────────────────────┐
│  PN532 NFC Transmitter │
└──────────┬─────────────┘
           │ 13.56 MHz NFC

           |
           ▼
┌────────────────────────┐
│ Implantable Stimulator │
│      (15 channels)     │
└──────────┬─────────────┘
           │
           ▼
      Vagus Nerve

Citation

If you use this project in your research, please cite the preprint:

https://doi.org/10.64898/2026.04.10.717669