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Interesting Engineering on MSN2h

Tiny explosion-powered braille screen could boost literacy for blind students

A tiny spark ignites the gas, causing a “tiny explosion” that forces a domed rubber membrane to evert, or turn inside out, creating a raised braille dot on the surface of the display.
XDA Developers on MSN18h

You, too, can make this stylish ESP32 air quality monitor with an e-ink display, and it looks stylish to boot

The device uses a PCB that integrates an ESP32-C3-mini with the CO₂ Sensor (SCD40). The PCB also has connectors for the ...