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Please, for the love of mankind would someone please explain to me why this instructable does not work with a Bluetooth dongle and raspberry pi zero. I have done everything over twenty times trying to get it to work. I've tried using equal length(to 1/10th mm) wires, powering the dongle separately, four different kinds of dongles, 2.0, 3.0 and 4.0. Wiring it directly to the pins I'm able to get the dongle to "behave" properly with the blue flashing light, but the pi board never sees/recognizes it. Yet when I plug it in the usual way via USB port it works fine. I know this is an old thread but perhaps someone will stumble on this eventually and impart their wisdom for me. Thank you thank you.