PIEEG / INSTRUMENT I3232 CH · 24-BITOPEN HARDWARE

IronBCI-32 / simultaneous acquisition

See thirty-twosignals at once.

A 32-channel, 24-bit open biosignal instrument built around four AD7771 converters and an STM32H7—ready to stream directly into software.

Inspect the channel anatomy Where to use it Buy on Elecrow
IronBCI-32 thirty-two-channel biosignal acquisition boardADC FIELD / 4 × 08CORE / STM32H7STREAM / WEB SERIAL
INSTRUMENT / I32IRONBCI-32REV.01 / OPEN SOURCE
Channels32 simultaneous
Resolution24-bit
Sampling500 Hz / channel
Conversion4 × AD7771
ControllerSTM32H7 / Cortex-M7
ConnectionUSB / Web Serial

01 / Instrument position

Density without opacity.

Thirty-two channels should reveal more of the signal—not hide more of the system. IronBCI-32 keeps its structure legible: four converter groups, one high-performance controller, and open routes into the browser, BrainFlow, and PiEEG software.

02 / Channel anatomy

Four groups.
One acquisition field.

Select an AD7771 group to inspect how thirty-two inputs are organized into four eight-channel converter banks.

Select an ADC group to inspect its eight-channel allocation.

ACTIVE GROUP / A08 CHANNELS
A

AD7771 / A

Channels 01–08

One AD7771 handles this group of eight inputs. Four identical groups create the instrument's simultaneous 32-channel acquisition field.

CH 01ACTIVE
CH 02ACTIVE
CH 03ACTIVE
CH 04ACTIVE
CH 05ACTIVE
CH 06ACTIVE
CH 07ACTIVE
CH 08ACTIVE

03 / Signal path

From skin potential
to software event.

01

Acquire

Electrodes meet thirty-two inputs

EEG, EMG, and ECG signals enter one simultaneous acquisition field rather than a sequence of disconnected measurements.
02

Convert

Four ADCs divide the field

Four 8-channel AD7771 converters resolve the incoming electrical activity at 24-bit depth.
03

Control

STM32H7 keeps time

An ARM Cortex-M7 controller coordinates acquisition and prepares all thirty-two channels for the software layer.
04

Stream

The browser becomes an instrument

Web Serial creates a direct hardware-to-browser path without a driver or local installation.
Top view of the IronBCI-32 boardVIEW / TOP / PCB ARCHITECTURE
Angled view of the IronBCI-32 boardVIEW / ANGLE / CONNECTOR FIELD

04 / Instrument in motion

See the instrument leave the bench.

A short field view of IronBCI in use. Playback starts only when you choose—no floating player, no autoplay, and no interruption to the rest of the page.

Playback
User controlled
Format
Field demonstration
Audio
Optional

05 / Technical dossier

The complete instrument, without the sales fog.

Core facts drawn from the open IronBCI-32 hardware and software documentation.

Acquisition channels
32 simultaneous biosignal channels
01
Analog conversion
4 × AD7771, 8 channels each
02
ADC resolution
24-bit
03
Controller
STM32H7 / ARM Cortex-M7
04
Sampling rate
500 Hz per channel across all 32 channels
05
Browser connection
Web Serial API / no driver installation
06
Software support
PiEEG Cloud · PiEEG Server · BrainFlow
07
Signal families
EEG · EMG · ECG
08

06 / Software routes

The board is the beginning, not the interface.

PATH / 01

Direct Cloud

Connect through the browser to PiEEG Cloud for signal visualization, P300 games, neurofeedback avatars, and real-time experiments.

Open PiEEG Cloud
PATH / 02

PiEEG Server

Move the stream into PiEEG Server for real-time processing and application development while keeping the acquisition chain visible.

Explore PiEEG Server
PATH / 03

BrainFlow

Use the established BrainFlow API to bring IronBCI-32 data into cross-platform biosignal workflows.

Read BrainFlow support

07 / Open instrument

Inspect the hardware.
Fork the software.
Build the application.

Open the repository Where to use it and how to set it up Get IronBCI-32

This product is intended for research, learning, and development—not for medical diagnosis or treatment. Read the safety notice.