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. 2019 Jul 9;6(4):ENEURO.0160-19.2019. doi: 10.1523/ENEURO.0160-19.2019

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Copyright © 2019 Matikainen-Ankney et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Figure 1. — RADs for high-throughput longitudinal recording of rodent physical activity. A, Schematic showing location of assembled RAD in rodent home cage. PIR sensor is activated by animal locomotion. B, Diagram of PIR sensor (MSP430-PIR, Olimex), SD logger (M0 AdaLogger, Adafruit #2796), and organic LED shield (FeatherWing, AdaFruit #2900) connected to a 3.7-V lithium ion battery (Adafruit #353). Components are soldered and (C) housed in a 3D-printed casing (for Arduino code and 3D printing files, see https://hackaday.io/project/160742homecage-activity-monitoring-with-pirs) and fitted on top of the chow tray, which is then placed in the cage (D). D, Top and side views of RAD fitted onto the chow try and placed in the home cage. E, Green “sensor zone” showing where RAD monitors activity in the home cage.