Solar energy harvesting possesses relatively high energy and power densities when compared to other energy harvesting methods. However, solar energy harvesting applications are severely limited by diurnal cycles and weather patterns. For biological applications, such as avian bio-loggers, the subject’s activity levels and location introduce further variability into the availability of solar energy. This work focuses on the challenges associated with developing a multi-source energy harvesting solution and overall power management system for an avian bio-logger. It uses an ATmega128RFA1 microcontroller along with lithium batteries and both a solar and piezoelectric energy harvester. The power management system and microcontroller operation were tested using a solar harvester.

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