Single-Lead, EXG Monitor (H2BR0x)


Single-Lead, Heart Rate Monitor

Stage: Testing

1 in stock


H2BR0x single-lead EXG Monitor based on the STM32G0 MCU, AD8232 chip, and MCP6002 1 MHz Low-Power Op Amp Hexabitz module is a sophisticated and versatile device tailored for monitoring bioelectric signals with precision and efficiency.

The STM32G0 MCU serves as the brain of the system, offering powerful processing capabilities, low power consumption, and integrated peripherals for data acquisition and processing. It enables real-time signal processing, data analysis, and communication with external devices.

The AD8232 chip is a specialized signal conditioning IC optimized for biopotential measurements. It features high input impedance, low noise, and exceptional common-mode rejection ratio, ensuring accurate and reliable signal acquisition. The AD8232 chip plays a crucial role in capturing and amplifying bioelectric signals such as ECG, EEG, EMG or EOG with high fidelity.

The MCP6002 1 MHz Low-Power Op Amp provides additional amplification and filtering functions to enhance the signal quality further. With its low-power operation and high-performance characteristics, the MCP6002 op amp complements the AD8232 chip’s capabilities, resulting in improved signal processing and noise reduction.

The Hexabitz module design integrates the STM32G0 MCU, AD8232 chip, and MCP6002 op amp into a compact and modular form factor, allowing for easy integration into various applications. The module’s compatibility with other Hexabitz modules enables seamless expansion of functionality and customization according to specific requirements.

Key features of this Single-Lead EXG Monitor include:
– STM32G0 MCU for robust processing capabilities
– AD8232 chip for high-quality signal conditioning
– MCP6002 op amp for enhanced signal amplification and filtering
– Modular design for flexible integration and scalability
– Low-power operation for extended battery life
– Compatibility with other Hexabitz modules for versatile application development

In summary, the Single-Lead EXG Monitor based on the STM32G0 MCU, AD8232 chip, and MCP6002 1 MHz Low-Power Op Amp Hexabitz module offers a comprehensive solution for monitoring bioelectric signals with accuracy, efficiency, and adaptability to diverse applications.



  • AD8232 single-lead, heart rate monitor front end, features: 
    • Fully integrated single-lead ECG front end
    • Low supply current: 170 µA (typical)
    • Common-mode rejection ratio: 80 dB (dc to 60 Hz)
    • Two or three electrode configurations
    • High signal gain (G = 100) with dc blocking capabilities
    • 2-pole adjustable high-pass filter
    • Accepts up to ±300 mV of half cell potential
    • Fast restore feature improves filter settling
    • Uncommitted op amp
    • 3-pole adjustable low-pass filter with adjustable gain
    • Leads off detection: ac or dc options
    • Integrated right leg drive (RLD) amplifier
    • Single-supply operation: 2.0 V to 3.5 V
    • Integrated reference buffer generates virtual ground
  • MCP6002 1 MHz, low-power Op Amp features:
    • Gain Bandwidth Product: 1 MHz (typ.)
    • Rail-to-Rail Input/Output
    • Supply Voltage: 1.8V to 5.5V
    • Supply Current: IQ = 100 µA (typ.)
    • Phase Margin: 90° (typ.)
    • Temperature Range:
      – Industrial: -40°C to +85°C
      – Extended: -40°C to +125°C


  • STM32G0B1CEU6N 32-bit ARM Cortex-M0 MCU.
  • 8MHz external oscillator.
  • Five array ports and ten power ports (+3.3V and GND).
  • Access to 5xUART, BOOT0, RESET.

Physical Properties

  • Shape: Dual-hexagon
  • Size: 60 mm short diagonal, 17.32 mm side
  • Area: 15.6 cm^2
  • Weight: 20 g
  • Soldermask Color: Dark green
  • Surface Finish: ENIG (gold) or HASL-LF (tin)


Please visit this product projects on Hackster.o network.



Quickstart Guide

Download a PDF version here.




Frequently Asked Questions

Have more questions? Please check our main FAQ page and feel free to contact us for any unanswered questions.


Download a PDF version here.


  • Schematics (PDF)
  • Hardware Design Files (EAGLE)
  • Source Code (GitHub). Download a pre-compiled firmware HEX file here.
  • Documentation / Factsheet (PDF)
  • Projects & Examples: Please check our account on for demo projects and examples.