I have 2 authentic DUEs that I recently bought from the ardiono.cc store. Both will power up with a USB cable connected. Neither will power up with 12VDC connected to the power jack. The 12V power supply I'm using works with an UNO and it's current capacity is 18A. I can measure 12V at the Vin pin s…

DUE External Power Not Working

KCL-Dagorlad July 26, 2018, 11:40am 4

Hi there, same problem here.

Genuine Arduino Due (not clone) bought sometime in May, external power supply via the DC power jack NOT working.

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