Uploaded July 2026 | Updated September 2026, 2 weeks ago

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I'm building a custom handheld console using the ESP32-S3.
For this test, I loaded Super Mario Bros. 3 (USA) via SD card, running on a 4.2" Black & White RLCD screen.

Current Specs:
- Brain: ESP32-S3
- Display: 4.2" B&W Reflective LCD (RLCD)
- Storage: SD Card ROM loading
- Audio: Full SFX & BGM support
- Controls: USB Keyboard (Custom gamepad coming next!)

[ESP32-P4 4" Round Display]
waveshare.com/esp32-p4-wifi6-touch-lcd-3.4c.htm?&aff_id=116255

#ESP32 #DIYGameBoy #RetroGaming #NES #SuperMarioBros3 #RLCD #MakerMovement #HandheldConsole #Electronics #Emulation