NeuroIDSS Set to Release the FreeEEG32 Electroencephalography Platform

NeuroIDSS is set to launch the company’s FreeEEG32 open source EEG ADC platform, which boasts 32-channel, 24-bit, sigma-delta, simultaneous sampling for scientists and hackers looking for research-grade equipment without the high costs.

According to NeuroIDSS, “FreeEEG32 is part of an ongoing scientific project to probe working memory in the brain and measure theta and gamma correlations with memory encoding. This project is dedicated to science and discovery and all those who undertake it. It is entirely open access and in the spirit of improving global scientific discourse and community.”

The FreeEEG32 board is designed around an STM32H7 Arm Cortex-M7-based chipset with 1027 DMIPS (Dhrystone Million Instructions Per Second), 2Mb of Flash, 1Mb of SRAM, and 16Kb of L1-cache. It's equipped with four AD7771 analog-to-digital converters (eight channels each), with up to 128kSPS simultaneous sampling, up to eight programmable gain, 107dB dynamic range (@ 32kSPS), and onboard SAR (successive-approximation-register) ADC for diagnostics. The board also packs separate USB ports for power and data and an SD card slot for data storage.

NeuroIDSS states the FreeEEG32 is aimed at EEG applications, mitigating noise and power control for safety, but can be utilized for other applications, including non-EEG biosignal acquisition and imaging, creating other types of high-channel signal analysis devices, and environmental sensing for industrial process control. What's more, it can handle ELF and ULF radio signal acquisition, smart home management, and power/noise measurement.

NeuroIDSS will be launching its FreeEEG32 platform on Crowd Supply in the coming weeks, although the exact launch date and price are currently unknown. They also note they are testing the board with an accelerometer for basic motion tracking, which could be added before its release.