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Simple (and dirty) Pulse Width Modulation (PWM) With 555 Timer
Arduino Pong Game - OLED display
Tiny ESP-01 Dev BoardView Instructable »
Wireless electricity transmission circuit
Simple Wireless Power
To get the look you are talking about, a white cloth would be much better instead of paper. I did turn the exposure up and it made the images much better
Capacitor Tester / Capacitance Meter
3$ Photography LightboxView Instructable »
the most simple USB cable manager ever!