Tutorialbeginner
Controlling LEDs With Your Mind (EEG) Using Arduino Uno R4
Build a brain-computer interface that reads EEG beta waves to illuminate LEDs on the Arduino Uno R4 LED matrix when you concentrate, using BioAmp EXG Pill and Brain BioAmp Band.
Firmware:Arduino
Use Cases:Education
Overview
This project demonstrates a simple brain-computer interface (BCI) that detects beta brainwave activity (13-30 Hz) associated with concentration and uses it to control LEDs on the Arduino Uno R4's built-in LED matrix.
Hardware Required
- BioAmp EXG Pill
- Brain BioAmp Band (or gel electrodes)
- BioAmp Cable v3
- Arduino Uno R4 Minima or WiFi
- Jumper cables
How It Works
The BioAmp EXG Pill records EEG from the prefrontal cortex via the Brain BioAmp Band. The Arduino Uno R4 performs real-time FFT analysis using the CMSIS-DSP library to extract beta wave bandpower. When concentration levels exceed a threshold, LEDs illuminate on the board's matrix display.
Firmware
Uses the Brain BioAmp Arduino Firmware examples:
- BCI FFT - Displays live EEG bandpower (Delta, Theta, Alpha, Beta, Gamma) on Serial Monitor
- BCI LED - Controls LED based on focus levels
- BCI Spiral - Runs a spiral LED game based on concentration
What You'll Learn
- Real-time FFT analysis of brain signals on Arduino
- Beta wave detection for concentration monitoring
- Building your first brain-computer interface
