Raspberry Pi lapdock tricks

11 Sep 2012

I learned a couple tricks for the Atrix lapdock last night during our Raspberry Pi / embedded interest group at my hackerspace. One of our members, Jay, had a super capacitor hooked up his Pi:

Why would he do this? Well, the power supplied from the Atrix lapdock drops for a few seconds when the lapdock lid is closed. The super cap keeps the Pi running in the meantime.

You can click on these pictures to enlarge, but there probably still isn't enough detail to know how to hook it up. Therefore, I'm hoping to get the complete details and will post here.

In the meantime, here's another trick Jay came up with where he uses a small USB battery pack to act as a buffer:

The charging input for the battery pack is connected to the lapdock while it's output goes to the Raspberry Pi (or Android MK802 mini-PC in these pictures):

Cheers,

Drew

Top Comments

Former Member over 11 years ago +1

Surgery free supercap mod for pi/lapdock I wired two 2.5 volt 1.0F supercaps in serial, cut the end off a usb plug and soldered the cap to the appropriate red & black wires on the usb plug. Some hot glue…

Former Member over 13 years ago in reply to fustini

Thanks for the quick response Drew, what I was looking for was which keyboard layout did people use for the Motorola lapdock, it has 65 keys, and I didn't see any options for that.
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fustini over 13 years ago in reply to Former Member

hi - you should be able to change the keyboard, locale and timezone with raspi-config: http://elinux.org/RPi_raspi-config type into the terminal: sudo raspi-config
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Former Member over 13 years ago

Please forgive such basic questions, I have my Raspi hooked up and it does look great, just two things, which keyboard do I choose? Tons of options I tried a few and the @ and " we reveresed. I also would like to know how do I set it up so the when i start it up it goes out and gets the correct time?
thanks everyone
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fustini over 13 years ago in reply to Former Member

I'm not sure, but I'll ask the next time I see the guy who made it at our hackerspace.
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Former Member over 13 years ago in reply to fustini

If i'm right, the power switch enables and disables the supercap, isn't it? So is this switch needed or is it possible to wire the supercap directly so it runs always?
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