Uploaded July 2026 | Updated September 2026, 2 weeks ago

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Someone asked if my ESP32-S3 + 4.2" RLCD setup could run DOOM. Challenge accepted.

MCU: ESP32-S3 (No GPU, No OS)
Display: 4.2" Reflective LCD (Ambient light only, 400x300 native res)
Graphics: 1-bit Bayer dithering (pixels are strictly ON or OFF)
Code: Based on Espressif's esp32-doom (PrBoom port)
Audio: 8-channel SFX mixer on Core 1 (Hum E1M1 yourself!)
WAD memory-mapped straight from flash.

Because everything must run DOOM.

[ESP32-S3 4.2" RLCD]
waveshare.com/esp32-s3-rlcd-4.2.htm?&aff_id=116255

#shorts #canitrundoom #esp32s3 #rlcd #retrogaming #diytech #embedded #electronics