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Adapt your Cubieboard to do more stuff!

TOPIC: Powering the Cubie with the Baseboard

Powering the Cubie with the Baseboard 3 years 11 months ago #2

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D2 on the Cubie is blocking the power from the Baseboard so you need to short out this diode with a small wire.

If you look at the DC circuit of the schematic (page 7) you’ll find this:





What you want to do is to short out D2. You need to do this because VCC-5V is what is routed to the pin header. DC-5V is routed to U5 and U7 regulators to generate 1.8V and 3.3V for the DDR and I/O sections of the Cubie board. I have attached a picture of what I did on my test board. You could also remove D2 and replace it with a 0 ohm 2010 SMD resistor (example part from Rohm MCR50JZHJ000).

Click on the picture below to enlarge it!



There are a few things on the Cubie board design that I would have done differently to allow us to use it better with other devices. Hopefully they will change their design later.
Last Edit: 3 years 8 months ago by admin.
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Powering the Cubie with the Baseboard 3 years 11 months ago #4

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Thanks,
I was just about to query why I needed to use an additional P/S to get the Cubieboard to work...
This answers that question rather thoroughly

Wayne
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Powering the Cubie with the Baseboard 3 years 8 months ago #56

Forgive my electronics newbieness, how exactly would you short the D2 as in what is the process?

thanks!
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Powering the Cubie with the Baseboard 3 years 8 months ago #57

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If you click on the picture in the original post it will open in a new window and show the short wire that was soldered onto the pads of D2. You will need a soldering iron in order to make this change.
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Powering the Cubie with the Baseboard 3 years 8 months ago #64

I didnt notice the other half of the image there haha cheers
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