27 November 2024 marked a milestone in sustainability as eco-friendly Fairphone 2 was officially transformed into the world’s first circular microcomputer. This innovation, developed by Belgian low-tech consultancy Citronics, demonstrates how discarded electronics can be repurposed to address growing e-waste challenges. Jean-Brieuc Feron, Citronics’ founder, shifted from aerospace engineering to sustainability, establishing the company to focus on low-tech, circular economy solutions. “We aim to address environmental impact at the design stage,” Feron explained, highlighting his transition from building space rockets to creating sustainable products like thermal batteries and e-bike components.
The journey to a circular microcomputer
Smartphones, with their powerful computing capabilities, became the inspiration for Citronics’ latest innovation. Feron recognized the untapped potential of reusing functional components, such as 4G modems, from discarded devices. Collaboration with Fairphone was key due to the Fairphone 2's modular design, which facilitates easy disassembly and component extraction.
The result is a versatile microcomputer capable of running Linux, connecting via multiple interfaces (4G, Bluetooth, Wi-Fi), and supporting applications ranging from industrial machinery to home heating systems and e-bikes. Citronics also plans to integrate displays and touchscreen functionality to expand use cases further.
Scaling sustainability
The disassembly process at Citronics ensures maximum reuse of components, including screws, screens, cameras, and USB ports. With plans to extend beyond Fairphone devices, Citronics aims to standardize components across brands to create performance “families” for broader application.
Summary
Looking ahead, Citronics is working with telecommunications companies on circular router projects and preparing for significant scaling in 2025 to secure funding for further development. While repurposing used smartphones, like trade-in programs, is a promising initiative, the current setup remains costly. However, it’s a worthwhile area for exploration. This concept should evolve from a niche hobby into a sustainable business model that is both economically viable and environmentally friendly. Emerging markets could benefit greatly from such solutions. A potential collaboration with companies like Closing the Loop, leveraging their one-for-one initiative, could help accelerate this transition.
Market
Trade-in
Repair
