Fig. 2
From: A simplified microwave-based motion detector for home cage activity monitoring in mice
Circuit Diagram and Assembly of the Motion Detector Shield. a Circuit Diagram of the Motion Detector Shield (MDS). b The MDS is stacked onto the Data Logger Shield and ultimately both are plugged into an Arduino Uno Rev3. c Top view of MDS. d Bottom view of MDS. e Replacement of onboard potentiometer with SMD0805 resistor pair. f Detailed depiction of SMD0805 resistor placement