The Hexabitz EXG Monitor module pairs a host of research-grade biosensors with an array of Hexabitz modules, from wireless solutions to motor drives, creating endless customizable configurations.

This new module is the best of both worlds: with its onboard ARM Cortex-M0 MCU, you can run local DSP and AI algorithms without needing external controllers. At the same time, it’s highly extensible and integrates with the Hexabitz ecosystem. So, you can easily interface your ExG Monitor module with Raspberry Pi and Arduino using our modular shield solution.

It is equipped with a 32-bit ARM MCU for standalone processing. The module also offers exceptional signal fidelity with a top-tier analog front end, while our preamp and filtering options ensure accuracy and multi-signal support. With our provided GUIs for Matlab and STM32 monitors, developing and using the EXG Monitor is fast and straightforward.

Harness Biodata in New Ways

While developing Hexabitz EXG, we came up with a number of exciting applications. By leveraging its advanced sensors, everything from advanced biometric authentication to artistic applications that use EMG signals to create interactive music, this module has a lot of potential for biohackers, researchers, and others curious about studying the signals generated by the human body:

• Leverage ECG for advanced personal identification: Use ECG recordings to identify people for security and authentication purposes.
• Control a bionic hand: Use EMG signals to control a custom-designed 3D-printed robotic appendage
• Blink Snap: Utilize electrooculography (EOG) signals to control a Raspberry Pi camera and capture images
• Detect room darkness and light using EOG signals
• Build a portable ECG, pulse rate, and oxygen level device
• And many more!

Features & Specifications

• STM32G0B1CEU6N
  • 32-bit ARM Cortex-M0 MCU
  • 8 MHz external oscillator
  • 100-500 sps sensor sampling rate
  • Five array ports and ten power ports (+3.3 V and GND)
  • Access to 5x UART, BOOT0, and RESET
• AD8232 single-lead, heart rate monitor, with:
  • 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
  • 2-pole adjustable high-pass filter
  • Leads off detection: AC or DC options
  • Integrated right leg drive (RLD) amplifier
  • Integrated reference buffer generates virtual ground
• MCP6002 1 MHz, low-power Op Amp
• High signal gain (G = 1170) with DC blocking capabilities
• Notch filter against mains voltage (50 Hz/60 Hz)
• Low-pass filter with switch for selecting cut-off frequency
• Audio jack or 3-pin header for electrode cable input
• 2-pin header for analog output
• Size: 60 mm x 34.64 mm (2.36 x 1.36 in) (2 x hexagons: 30 mm short diagonal, 17.32 mm side)
• Weight: 20 g (0.71 oz)

Open Source

Hexabitz EXG Monitor is open hardware. We have already prepared sources for the boards, which you can check out on our product page. Here, you can find the BoM, specifications, schematics, hardware design files, and more.

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