The custom machine uses an ESP32-C3, OLED display, and 16-key keypad while squeezing retro gaming into a tiny 150mW power budget.
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August 11, 2026 at 9:30 AM
DIY modder creates 'heat engine computing device' powered by a Stirling engine, can run Tetris, Snake, and Pong — 80 MHz processor operates on just 150 milliwatts of power
Toms Hardware