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Octopus: A low-cost, modular environmental sensing platform for makers
Oluwatobi Oyinlola1, Åse Håtveit1, Chada Elalami1
1Senseable City Lab, Massachusetts Institute of Technology, Cambridge, MA, USA.
Hardwarex
|June 22, 2026
Summary
Octopus is an open-source hardware platform for low-cost environmental monitoring. This modular system empowers citizen scientists and educators with accessible tools for data collection and research.
Area of Science:
- Environmental Science
- Engineering
- Computer Science
Background:
- Environmental monitoring is crucial but often hindered by high costs and proprietary systems.
- There is a need for accessible, adaptable tools for citizen science and environmental education.
Purpose of the Study:
- To introduce Octopus, a fully open-source, low-cost hardware platform for environmental sensing.
- To enable makers, educators, and citizen scientists to conduct environmental research.
Main Methods:
- Designed a compact, custom PCB and 3D-printed enclosure.
- Integrated Arduino-compatible microcontrollers and plug-and-play sensors (particulate matter, GPS, temp, humidity).
- Ensured ease of assembly, modularity, and reproducibility with freely available design files.
Main Results:
- Octopus devices can be built for under $100 USD.
- The platform supports diverse environmental sensing applications.
- Complete documentation and firmware libraries are provided.
Conclusions:
- Octopus significantly lowers the barrier to entry for environmental sensing.
- It offers an extensible and adaptable solution for hands-on research and education.
- The platform fosters grassroots environmental monitoring initiatives.
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