Recent signals
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Designer turns discontinued E-Ink dev board into a 60Hz Game Boy handheld — dual-core chip runs at 100% to power handheld, 960x540 display employs ultra-low-cost ESP32-S3 microcontroller
Tom's Hardware
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Someone made an e-Ink ESP32 Game Boy, and it runs at a very playable 60Hz refresh rate
XDA-Developers