Is there anyone here with a RADDS v1.2 shield and UDOO that has been able to successfully power both from the 12V VIN on the RADDS?
It works fine if the UDOO is plugged into 9V and the RADDS is plugged into 12V.
But the moment you unplug the 9V PSU, it reboots and boot-loops forever.
My hunch tells me it's probably due to revised VIN circuitry on the RADDS 1.2 revision (it used to just have a single Zener diode, now it seems to have some kind of a buck circuit, i'm guessing to make it possible to run off 24V).
It works fine if the UDOO is plugged into 9V and the RADDS is plugged into 12V.
But the moment you unplug the 9V PSU, it reboots and boot-loops forever.
My hunch tells me it's probably due to revised VIN circuitry on the RADDS 1.2 revision (it used to just have a single Zener diode, now it seems to have some kind of a buck circuit, i'm guessing to make it possible to run off 24V).