Traumschreiber
Goal
A non-profit ExG device for under €100. Developed for education and advanced sleep and dream research – from interactive dreaming to 2-channel EOG to closed-loop EEG stimulation. Full access to raw data without hidden fees.
Technical Features
- 8 differential ExG channels – supports 2 to 16 electrodes with customizable placement
- 250 Hz sampling rate
- microSD card for local storage
- Real-time access to raw data via firmware and BLE
- RGB LED for status indication
- Battery-powered for mobile use
- Integrated microphone
- Control button for easy operation
- Size: 4.0×5.0×1.5 cm
Open hardware: the complete schematic is published on GitHub; firmware and software will follow.
Status
The Traumschreiber is expected to be available from November 2026.
A comparison of the Traumschreiber with polysomnography (PSG), using whole-night recordings from more
than 10 participants, is currently under way and is expected to be completed by the end of 2026. The
first results look promising.
Order
Everything you need to order – configurations, prices and the request form – is on the Traumschreiber page and in the sd20 Factory. Production starts on 1 November 2026.