Known as an oximeter, the device has been designed so that it can be easily 3D printed and assembled at home with minimal tooling. It uses widely available components to provide indicative measurements of blood oxygen and heart rate that have been widely used for triage purposes during the Covid-19 crisis.
The team said it made extensive use of open source or freely available design tools wherever possible such as PCB designer Eagle alongside FreeCAD and OpenSCAD for its body design.
Anyone with a 3D printer should be able to make their own device, which comprises a sensor, readout electronics and software, with components that cost less than £10.
The sensor is worn on a finger clip (pictured) and measures the reflection of different wavelengths of light, tracking the wearer’s heart rate and saturated percentage of oxygen.
Trial devices have already...