Guadagnini et al. built a photometer consisting of a red LED (wavelength 620 nm), a BH1750 sensor, controlled by an Arduino NANO, showing applications for absorbance measurements in CuSO 4. dos Santos ...

Three sensors. Specifically, under the contract – won by the UK MOD’s procurement arm Defence Equipment and Support (DE&S) – Smiths will develop three ‘next-generation’ chemical sensor products for ...