Raspberry PI + Motorola Lapdock


Introduction: Raspberry PI + Motorola Lapdock

A few months ago I found through a MOOC at Universidad Galileo, that was possible to convert a Raspberry PI in "almost" a laptop. This idea caught my attention, by turning this "micro" in an independent computer. I investigate how to do it and I concluded that it was possible for me to do so, although it was not "quite easy". Below I detail what I did to achieve my RBPI used as a laptop. I have based on other blogs, in which details nearly the same procedure. I detail which worked for me, the problems I had, and how I finally managed to solve it

Step 1: Buying MOTOROLA DROID RAZR Lapdock 100

Some years ago I saw this gadget which I found very interesting although a bit extravagant. It is a device that was developed by Motorola, in order to "convert" a cell (specifically the Motorola Droid Razr) in a laptop. This device called Lapdock, is no more than a 10 "display with keyboard, battery and two USB ports. From backside lapdock there is a cable that terminates in a micro USB port and a micro hdmi, intended to connect the cell to the lapdock. Initially Motorola was selling roughly about $ 500.00 (not counting the cost of the phone) but it was not very well and ended up selling it much cheaper. Currently is available in Amazon about $ 110.00 in NEW condition. I bought one used at Amazon in "LIKE NEW" condition at US$ 45.00 plus shipping.

With state LIKE NEW from Amazon, the lapdock, came with his box in excellent condition with charger and user manual. The lapdock even had his M Sticker on the Motorola Lapdock.

Step 2: Buy Cables to Connect to RBPI Lapdock

This was what gave me more headaches. The blog in which I based to make the connection suggested some cables for which Amazon had no stock. Ok I did my own analysis on how to connect everything to plug perfectly. I made a diagram to better understand the connection. I placed the order for the lapdock + cables + connectors, and after a month I received everything but my calculation failed. I did not take into consideration how close was the hdmi and USB connectors of the lapdock. If connecting one of the two, the other could not be connected. I left the idea of ​​the lapdock for a month ... Then resume the idea but this time with other cables, and finally with a configuration that did work for me. The cables and connectors configuration is:

Connectors: Bought (both) on amazon for an amount of U.S. $ 11.90:
1) Micro HDMI Female to HDMI Male Converter Adapter
2) USB A Male to Micro USB Female Adapter (Black)

Cables: Bought in dx.com amounting to U.S. $ 9.70 (These were purchased from a Chinese shop, so shipping was a little slow):
3) Male D Type Micro HDMI to Female Micro  HDMI Cable for Motorola Cell Phones
4) Micro USB Male to Female Extension Data Cable - Black

Step 3: Connecting to the Lapdock

The numbers on the image, not correspond to an order... is only the id of the component.

Step 4: Adjust Raspberry to Lapdock

Step 5: Turning on the Lapdock

Turn on the Raspberry PI + Lapdock cost me to understand. For a good time I could not understand how turn it on as it seemed a rather unstable operation sometimes and others just do not understand why not turn.

Below I detail as I turn on the Raspberry PI + Lapdock, assuming the lapdock is closed and the battery is charged:

1) Connect the USB cable to power the RBPI.
2) Open lapdock.
3) For the above two operations should not light any LED on RBPI
4) Press power button that appears above key "DEL" for 5 sec.
5) You should now start the S.O.

1) Always run a shutdown to S.O.
2) Wait close all OS services and processes
3) After you have closed all services and processes and turn off the monitor lapdock, some leds RBPI, will continue on for a few seconds. We must wait until these are turned off for the RBPI finish doing everything. When finished, it is already possible to close the lapdock, disconnect the USB cable if desired, or turn on again.

If on the Power Off, for some reason we remove the power source when they have no off all leds RBPI surely give you some problem next on, for which we must try several times to turn on and off the lapdock, connect and disconnect the uSB cable until we get the normal operation of power again. Maybe this is a little empirical procedure, but it's the only thing I found.

Step 6: Antena Wireless

This is not necessary for the operation of the Lapdock, however, have an antenna to connect to WIFI, adds a lot of convenience when working with RBPI. I mention this point because any antenna can possibly NOT run the RBPI. I had WIFI at home with two antennas and neither could connect to my RBPI. For U.S. $ 13.25 acquired this, but right now I see that is costing U.S. $ 9.99.

The link is the same:
Edimax EW-7811Un 150 Mbps Wireless 11n Nano Size USB Adapter with EZmax Setup Wizard

This is the photograph of my antenna WIFI. I love it because it is very small and easy to install. Also .. this can be connected to the lapdock instead of connecting directly to RBPI

Step 7: References:



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    20 Discussions

    This doesn't work with Raspberry Pi model B. May be model B takes more power than the lapdock can provide.

    1 reply

    Nice job!! You connected only data+ and data- USB cables to turn on the keyboard and trackpad?

    Question: So is the RPi powered by the lapdock's battery or is it powered independantly of the lapdock?

    1 reply

    Hi, the RPi is powered by the lapdock's battery

    Lapdock's battery supply power about 6 hrs aprox.

    Does this work with the raspberry pi 2? A friend of mine has one and is soon as the pi boots up the screenshots off

    3 replies

    I experienced a problem like your friend, but I found a way to turn on that I explain in step 5.

    Raspberry + Lapdock has some trick to turn it on.

    Yes, It will work with the Pi 2, but remember to use a power source plugged into the pi itself, like a wall wart or a battery pack, otherwise you run the risk of blowing the power processing micro-controller.

    Just a note it is possible to get the Audio to work but you have to force it over HDMI.

    I haven't read your entire instructable, so maybe you addressed this. I did this process from instructions from adafruit, and ran into a few little snags-- that were fixable.

    When I got one of the adapters, the housing did not fit, so I had to cut it up, which made it kind of ugly. I eventually sugrued both the connectors into a single housing.

    The other snag was that I was getting lots of weird keyboard & mouse errors because the Motorola lapdock did not supply sufficient power. Once I attached a different power supply with enough amps, everything worked as advertised.

    1 reply

    I also make a similar process in which I had to cut the HDMI connector, which I preferred not to do, so, I was looking for another alternative configuration of cables and connectors, which I publish in this instructable, with which you must not cut the HDMI connector.

    About the power of the battery of the lapdock, I had no problem. The monitor, keyboard and mouse have worked very well, and the battery supports several hours of continuous use ... about 5 hours with no problem ... The only problem I have is knowing how to turn it on, but I managed to do that and explained in the penultimate step of this instructable

    I have the original dock. It is much nicer. The cables still work together. Thanks for this ible.

    1 reply

    Nice job. I have a bricked laptop and this just might be the key to bringing it back to life.

    1 reply