Engineers share DIY instructions for 3D-printed blood oxygen sensor

'Make-at-home' pulse oximeter that can help track Covid-19 symptoms shared by Bath engineers. Last updated on Wednesday 17 February 2021 - Designs for a low-cost, 3D-printed blood-oxygen sensor have been shared by University of Bath engineers to help in the fight against Covid-19. The do-it-yourself 'Open Oximeter' sensor, designed by a team of engineers and scientists, can be created by anyone with a 3D printer and basic electronics skills. Costing less than £10 it will accurately monitor a person's blood-oxygen levels - a key symptom of Covid-19. Based on existing commercial sensors, the oximeter is worn on a finger clip and measures the reflection of different wavelengths of light, tracking the wearer's heart rate and saturated percentage of oxygen (SpO2). The design, which comprises a sensor, readout electronics and software, has been published in the Journal of Open Hardware . The design files have been shared on GitLab.