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I've just installed Raspbian to my new RPi2 B+. Shutdown and connect Adafruit Neopixel Ring (3 connectors: 4th pin - 5v, 6th pin - GND, 12th pin - DATA IN) and boot the RPi. Then it has reset itself and hasn't booted anymore. Red pwr led lights faint, and the green just a bit. Power supply is 5V, 2A.

Edit: After all found the recommendations to not supply Neopixels by the 5V rpi's output. The question is - is it possible to recover RPI or better throw to trash?

Damian Przygodzki
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Remove all the neopixel bits. If the pi boots with no issues then thank the relevant god(s) and continue.

If the pi does not boot, do not worry. You have made your sacrifice of magic smoke - buy a new pi.

Edit to add: Check really carefully that the pins you soldered to the Neopixel Ring are what you think they are. If mixed them up... magic smoke risk.

user2702772
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