PIEEG / INSTRUMENT M088 CH · STM32FIELD UNIT / 01

MicroBCI / embedded acquisition

Move the experimentbeyond the desk.

MicroBCI brings eight-channel biosignal acquisition into the STM32 ecosystem—a compact, open stack for learning, prototyping, and portable experiments.

Follow the field route Buy on Elecrow
MicroBCI eight-channel STM32 biosignal acquisition shield
ACQUISITION08 BIOPOTENTIAL CHEMBEDDED HOSTNUCLEO-WB55FIELD ROUTEBATTERY → SOFTWARE
Inputs8 channels
Resolution24-bit
TransferSPI / 250 SPS
PlatformNUCLEO-WB55
Gain1–24×
SDK routesPython · Mobile

01 / Instrument position

A field instrument is a route,
not a smaller desktop.

MicroBCI brings sensing and embedded computation into one portable stack. The form becomes smaller, but the signal path stays open: electrodes, acquisition, STM32, and software remain visible to the builder.

02 / Field route

From contact
to mobile context.

Four physical layers carry a weak biological potential into an application without hiding the system between them.

  1. 01

    CONTACT

    Electrodes meet the body

    Eight wet or dry electrode inputs acquire EEG, EMG, or ECG activity.
  2. 02

    SHIELD

    MicroBCI resolves the signal

    The acquisition layer provides 24-bit measurement and programmable gain.
  3. 03

    NUCLEO

    STM32 becomes the field computer

    The shield connects directly to the NUCLEO-WB55 development platform.
  4. 04

    OUTPUT

    Software carries the experiment

    Python, mobile, and STM32 framework routes move the acquired data into an application.
Front view of the MicroBCI board showing its labeled connectionsBOARD FIELD / LABELED CONNECTIONS

03 / Physical setup

Portable does not mean casual.

The official setup uses the MicroBCI shield with a NUCLEO-WB55 board, battery power, an EEG cap, electrode cables, and reference clips. The complete system must remain galvanically isolated from mains power during measurement.

Read the setup manual
MicroBCI shield shown in a person’s hand to demonstrate its scale
FIELD VIEW / 01Scale in hand
Clean product view of the MicroBCI acquisition shield
OBJECT VIEW / 02MicroBCI shield

04 / Software routes

One embedded signal.
Three ways forward.

SDK / 01

Python

Acquire, inspect, save, and process MicroBCI data through the open Python examples and tools.

Explore the repository
SDK / 02

Mobile

Use the documented mobile software route when the experiment needs an interface beyond the workstation.

Read the software guide
SDK / 03

PiEEG Server

Bring the embedded acquisition stream into PiEEG Server for browser visualization and application integration.

Explore PiEEG Server

05 / Technical dossier

The small form.
The complete facts.

Specifications are drawn from the official MicroBCI product and open-source documentation.

Acquisition channels
8
01
ADC resolution
24-bit
02
Data transfer
SPI / 250 SPS
03
Development platform
STM32 NUCLEO-WB55
04
Programmable gain
1 / 2 / 4 / 6 / 8 / 12 / 24
05
Electrode support
Wet or dry
06
Supported signals
EEG · EMG · ECG
07
Software
Python SDK · Mobile SDK · STM32 framework
08

06 / Open field instrument

Carry the signal.
Keep the route.
Change the context.

Open the repository Read the documentation

MicroBCI is intended for research, learning, and engineering—not medical diagnosis or treatment. Read the safety notice.