Built this NFC ePaper project in just 2 hours! And you can recreate it in just 5 minutes. Tap your phone → Update the ePaper display.
A CO₂ monitor that spends its life asleep — waking every 20 mins just long enough to measure, redraw its e-paper screen, and doze off again.
Beyond Books: A High Schooler's Journey into PCB Design.
