GRASPion: An open-source, programmable brainbot for active matter research

Novkoski F, Mélard M, Delens M, Wéry F, Noirhomme M, Pande J, Maier A, Smith AS, Vandewalle N (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Review of Scientific Instruments AIP Publishing

Book Volume: 97

Article Number: 014704

Journal Issue: 1

DOI: 10.1063/5.0303152

Abstract

We present the GRASPion, a compact, open-source bristlebot designed for the controlled study of active matter systems. Built around an Arduino-compatible board and modular 3D-printed components, the GRASPion combines ease of use, programmability, and mechanical versatility. It features dual vibrating motors for self-propulsion, integrated sensors for local interaction, and customizable firmware enabling various motion modes, from ballistic to diffusive regimes. The robot is equipped with onboard IR communication, color and proximity sensors, and a magnetometer, allowing for real-time interaction and complex collective behaviors. With a runtime exceeding 90 min and reproducible fabrication, the GRASPion provides a robust and scalable platform for both educational and research applications in out-of-equilibrium physics. This article details the mechanical and electronic design and software architecture of the GRASPion and illustrates its capabilities through prototypical experiments relevant to active matter, such as diffusive motion, synchronization, and phototaxis.

Authors with CRIS profile

Filip Novkoski Physics Underlying Life Science (PULS) Andreas Maier Lehrstuhl für Informatik 5 (Mustererkennung) Ana-Suncana Smith Physics Underlying Life Science (PULS)

Involved external institutions

University of Liège (ULg) / Université de Liège BE Belgium (BE) FLAME University IN India (IN)

How to cite

APA:

Novkoski, F., Mélard, M., Delens, M., Wéry, F., Noirhomme, M., Pande, J.,... Vandewalle, N. (2026). GRASPion: An open-source, programmable brainbot for active matter research. Review of Scientific Instruments, 97(1). https://doi.org/10.1063/5.0303152

MLA:

Novkoski, Filip, et al. "GRASPion: An open-source, programmable brainbot for active matter research." Review of Scientific Instruments 97.1 (2026).

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