First battery-free energy harvesting GameBoy

September 04, 2020 //By Nick Flaherty
First battery-free energy harvesting GameBoy
A battery-free emulation of the 8bit GameBoy platform is powered purely by solar cells and button clicks for energy harvesting at TU Delft

Researchers in the Netherlands have developed a hand-held GameBoy video game console allowing indefinite gameplay by energy harvesting from solar cells and the buttons

The proof-of-concept was developed by researchers at the Delft University of Technology (TU Delft) in the Netherlands and Northwestern University in the US.

The energy aware gaming platform (ENGAGE) has the size and form factor of the original GameBoy, using a set of solar panels around the screen. Button presses by the user are a second source of energy. Most importantly, it impersonates the Game Boy processor to run games straight from the original cartridge.

As the device switches between power sources, it does experience short losses in power. To ensure an acceptable duration of gameplay between power failures, the researchers designed the system hardware and software from the ground up to be energy aware as well as very energy efficient. They also developed a new technique for storing the system state in non-volatile memory, minimizing overhead and allowing quick restoration when power returns. This eliminates the need to press "save" as seen in traditional platforms, as the player can now continue gameplay from the exact point of the device fully losing power. 

On a typical day, gameplay interruptions typically last less than one second for every 10 seconds of gameplay. The researchers find this to be a playable scenario for some games -- including Chess, Solitaire and Tetris

"Sustainable gaming will become a reality, and we made a major step in that direction -- by getting rid of the battery completely," said Przemyslaw Pawelczak, assistant professor in the Embedded Software Lab at TU Delft who co-led the research. "With our platform, we want to make a statement that it is possible to make a sustainable gaming system that brings fun and joy to the user."

"It's the first battery-free interactive device that harvests energy from user actions," said Josiah Hester, assistant professor of electrical and computer engineering

Picture: 
A self-powered GameBoy, courtesy Northwestern

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