BioAmp EXG Pill (Assembled ECG/EMG/EOG/EEG Module) - 3.3V/5V AFE, 1-Channel
BioAmp EXG Pill (Assembled ECG/EMG/EOG/EEG Module) - 3.3V/5V AFE, 1-Channel - Image 2
SKU: SENS-0193
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BioAmp EXG Pill (Assembled ECG/EMG/EOG/EEG Module) - 3.3V/5V AFE, 1-Channel

₹2,639.00 (Inclusive of all taxes)
Out of Stock

The BioAmp EXG Pill is a compact, assembled analog-front-end (AFE) module designed for acquiring high-fidelity biopotential signals (ECG, EMG, EOG, EEG) from the human body. It interfaces directly with any 3.3V or 5V microcontroller or single-board computer featuring an ADC input, such as Arduino, ESP32, STM32, or Raspberry Pi Pico.

Features

  • Acquires publication-grade ECG, EMG, EOG, and EEG signals with configurable bandpass filtering.
  • Ultra-high input impedance (10^12 Ω) ensures minimal signal loading and high signal integrity.
  • Compact pill-sized form factor (25.4 x 10.0 mm) for integration into wearable and mobile projects.
  • Operates from a single 3.3V or 5V supply, compatible with a wide range of MCUs and ADCs.
  • Features powerful noise rejection for stable operation near AC mains and other interference sources.

Out of stock

Description

The BioAmp EXG Pill is a specialized analog signal conditioning board that serves as a precision front-end for biopotential acquisition. It amplifies and filters the microvolt-level signals generated by the heart, brain, eyes, and muscles, preparing them for digitization by an external ADC. Its core design focuses on achieving clinical-grade signal quality in a minimal footprint.

Engineered with a high-input-impedance instrumentation amplifier and configurable gain and filter stages, the module rejects common-mode noise and powerline interference effectively. This allows for reliable data capture even in electrically noisy environments. The hardware and associated software (Chords Software Suite) are open-source, providing full transparency and customization for research and development applications.

Key Features

  • High-Fidelity Signal Acquisition: Designed to capture publication-quality biopotential waveforms (ECG, EMG, EOG, EEG) with low noise and high accuracy.
  • Configurable Analog Front-End: User-adjustable gain, bandpass filter cutoff frequencies, and electrode configuration (2 or 3 electrodes) to suit specific biopotential types.
  • Ultra-High Input Impedance: 10^12 Ω input impedance minimizes signal attenuation and ensures accurate measurement from high-source-impedance electrodes.
  • Robust Noise Immunity: Integrated filtering and differential input architecture provide excellent rejection of 50/60 Hz mains interference and environmental noise.
  • Broad Hardware Compatibility: Interfaces with any 3.3V or 5V logic microcontroller, SBC, or dedicated ADC (e.g., ADS1115) via simple analog output connection.
  • Open-Source Platform: Full access to schematics, firmware, and compatible software tools (Chords Web, Python, LSL Connector) for complete project control.

Applications

  • Wearable health monitors for real-time ECG heart rate variability (HRV) or EMG muscle activity tracking.
  • Research-grade brain-computer interface (BCI) and neurofeedback systems using EEG signals.
  • Eye-tracking and human-computer interaction studies utilizing electrooculography (EOG).
  • Portable diagnostic devices for field-based physiological monitoring and data logging.
  • Educational platforms for teaching biomedical signal processing and instrumentation principles.

Technical Specifications

Operating Voltage3.3 V / 5 V DC
Input Impedance10^12 Ω
Number of Channels1
Compatible BiopotentialsECG, EMG, EOG, EEG (Configurable)
Default ConfigurationEEG & EOG Bandpass
Electrode Configuration2 or 3 Electrodes (Configurable, Default: 3)
Output InterfaceAnalog Output (to External ADC)
Dimensions (L x W)25.4 mm x 10.0 mm
Compatible HardwareAny MCU/SBC with ADC (Arduino, ESP32, STM32, Raspberry Pi Pico, etc.)
Software SuiteChords Web, Chords Python, Chords LSL Connector

Frequently Asked Questions

What power supply does the BioAmp EXG Pill require?

The module operates from a single 3.3V or 5V DC power supply. You must connect it to a clean, regulated voltage source from your microcontroller or a dedicated regulator. Ensure the ground reference is shared between the power supply, the EXG Pill, and your ADC for proper signal measurement.

How do I connect this module to my Arduino or ESP32?

Connect the EXG Pill's power (VCC) and ground (GND) pins to your board's 3.3V or 5V and GND. The module's analog output (OUT) pin connects directly to an analog input (ADC) pin on your microcontroller (e.g., A0 on Arduino). You will also need to connect the electrode cables from the subject to the module's input terminals.

Can I use this sensor for both ECG and EEG?

Yes. The BioAmp EXG Pill is a configurable analog front-end. By default, its bandpass filter is set for EEG and EOG signals (lower frequency content). For ECG or EMG, you can modify the onboard component values (resistors/capacitors) to adjust the gain and filter cutoff frequencies to the optimal range for those specific biopotentials, as per the open-source documentation.

What is the purpose of the ultra-high 10^12 Ω input impedance?

The extremely high input impedance is critical for biopotential measurement because it prevents the sensor from loading the high-source-impedance signal from the body and electrodes. This ensures the tiny microvolt-level signals (ECG, EEG) are not attenuated, allowing for accurate, high-fidelity recording without significant signal loss.

What software can I use to visualize and record the data?

The module is compatible with the open-source Chords Software Suite, including Chords Web for browser-based visualization, Chords Python for data logging and analysis, and the Chords LSL Connector for integration with Lab Streaming Layer frameworks. You can also write custom code to read the ADC values from your microcontroller and process them in any environment you choose.

Package Includes

  • 1 x BioAmp EXG Pill Module (Assembled)
  • 1 x BioAmp Cable V3
  • 3 x Jumper Cables
  • 3 x 4" Gel Electrodes
  • 4 x Zip Ties

Additional Information

Weight 0.075 kg
Dimensions 2.54 × 1 cm

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