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Lidl glider RC modification with folding propeller + customized LED strips for racing drones

The Lidl glider, very popular for its low price and huge wingspan, sold as a free flight glider for kids, it's perfect to ...
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Building Propeller Clock from LED Display

This mechanically scanned propeller LED clock was made from 7 LEDs that gives the illusion of number in the air as it spins. During operation, a PIC16F84 microcontroller keeps track of time and ...