By using electroluminescent parts from ThinkGeek’s epic Wifi-Detection shirt ($20), this modder created a sweet wifi-detecting bumper sticker.Â It’s a super simple project you can build yourself an EL bumper sticker in a few hours with outstanding results.
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The power for the display is provided by the car’s 12v supply using a USB 5v adapter. The power connectors go through the tail lights so it only lights up at night. All thatâ€™s left is attaching the whole EL display to the rear window with some fabric double stick tape.