![]() Our sensor is 3D-printed on a hobby printer and is programmed with Arduino IDE, making it accessible to those without high-tech workshop access and limited programming skills. It is an optical scatter sensor with an 850 nm LED and two IR detectors, and features a temperature and pressure sensor. Compared to commercial turbidity sensors ( >6000€), our low-cost version ( ∼200€) allows for multiple deployment and therefore a high spatial coverage of sediment fluxes. ![]() For this reason, we have built an open-source turbidity sensor that brings accessibility to global river research. Due to the high cost of suspended sediment monitoring technology, it is extremely difficult to obtain a complete understanding of the physical connections between climate, hydrology, fluvial processes, and sediment fluxes, which requires measurements at many locations. Fine sediment production in catchments and transport through rivers to floodplains and coastal areas is extremely important for riverine, coastal and marine ecosystems, nutrient transport, global biogeochemical cycles, water quality and pollution.
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