Step 9: Cables

Correctly connecting USB cables can cause confusion between the four different wires in each cable. The USB standard uses Red, Black, Green & White wires, each must be correctly matched or the devices wont work. I used the Wikipedia USB Page as a guide.

1 | Where the USB cable was detached from the hub we now need to reattach the new, shortened USB cable, along with a +5v input from the LDO. Using the same USB lead measure the cable so there is enough wire to go from the hub to the Raspberry Pi. Connect the White (D-), Green (D+) and Black (gnd) wires to the hub. Do not connect the Red (+5v) wire from the USB cable connected to the Raspberry Pi. We leave the +5 cable out so that we do not draw any power from the Raspberry Pi's USB connection. Instead power comes from the +5v LDO.

2 | To the USB hub attach a Red (+5v) & Black (gnd) wire, at the other end of this cable attached male DuPont connectors into a two-pin plug. This wire will connect to the regulated +5v & gnd lines from the LDO.

The slide switch will be used to direct power from either the battery pack (on position), or the DC socket (off position). When there is no jack in the DC socket the LapPi will be powered down. There are no charging circuits inside the LapPi so the batteries will need to be removed from the holder when the time comes to recharge them.

3 | The centre two poles of the switch will be the main power line. Connect the PP3 connector lead to one end of the switch, cover the connections with heat-shrink. At the other end connect lines which will come from the DC socket, connect and heat-shrink the DC supply wires. I have used DuPont connectors to make it easier to dismantle the LapPi should the need arise.

4 | The centre two poles need to be split into three outputs; 1 to the Raspberry Pi, 1 to the USB Hub's LDO, and the last will provide power for the screen pack. Again I have used DuPont connectors where appropriate. To make it simple to keep track of the different connections I have put a small length of heat-shrink tube on the corresponding positive wires for each connection. For example I have used blue to highlight the DC sockets wires.

5 | Connect a measured length USB cable to the GPS dongle.

6 | You now have to create the opposite end of the IDE cable used in the screen pack, the process is exactly the same as last time. I began working with the two USB connections. Once a set of four wires was finished I tested it worked correctly by plugging the cable into a USB port while the Bluetooth/WiFi dongle was connected to the other end. For the power supply to the screen use DuPont connectors to match the power supply from the switch.

7 | Connect the panel mount USB socket to a USB plug. Check the cable length before hand.
I made mine out of lego. I used an odroid x2 board. I powered the screen from an external phone battery charger, and the board from a 12v battery supply. The 12v supply was connected to a car usb charger.
<p>What keybord did you use???????</p>
<p>im making one! this is great!!!it is AMAZING!!!!!!!!!!!!!!!!!!!!!!! </p><p>im soooooooooooo happy that this does not have a 3d printer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>Great! I noticed your Pi looks different than mine. What kind is it, and will this work with newer versions of the Pi? Also, since you put the &quot;Fixing things that were wrong&quot; Does that mean the whole Tutorial has mess ups in it? Very Confused</p>
<p>Hi SilverJimmy! I am Sahas. I made My own version of the raspberry pi laptop. You served a great inspiration! Thanks... Check it out here: </p><p><a href="http://www.instructables.com/id/Pi-Berry-Laptop-The-Classic-DIY-laptop/" rel="nofollow">http://www.instructables.com/id/Pi-Berry-Laptop-Th...</a></p><p>Also I have entered it into the Remix Contest, Raspberry Contest, Epilog Contest. </p><p>Thanks Again!</p>
<p>How long does the Raspberry Pi last on battery power with the 15w 3amp converter. and 8 1.5v AA batteries. I am looking at a portable project. A very low budget project.</p>
<p>In the process of building my own! This project Rocks!! Thank you for some great ideas! I love what you did here! </p>
<p>Is there an alternative to the raspy juice expansion board? They are currently out of stock</p>
<p>something like this would probably work | https://pi.gate.ac.uk/pages/mopi.html</p>
<p>I have a project of a small computer but with a DVD\CD Player. I know <br>that it's impossible to use a CD player with an Android Tablet so my <br>question is : Is it possible ? How ? (Hardware and Software ?)</p>
Would it be practical to make the case water and or air tight?
<p>Wifi, GPS, &amp; Bluetooth you decided the hard way. You can just use mini dongles.</p>
<p>Exercise me, how big the Aluminum Case should I buy?</p>
<p>Also keep the shields (wifi, gps, bluetooth..) in your mind. They all must be fit into lower area.</p>
<p>Depends on your screen size. You'll need to match it to your LCD.</p>
<p>about 7 inch lcd. A <a href="http://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.4.26gwB9&id=20379451332#" rel="nofollow">25.5X16X8CM</a>(XxZxY) Aluminum Case? </p>
<p>So long as the internal space is large enough for the screen you'll be fine. Remember to account for a border around the edge to mount the LCD.</p><p>I no longer have the LapPi in my possession, or a 7&quot; LCD so unfortunately I can't take any measurements for you.</p>
<p>Oh too bad :(</p><p>I think 8cm whole tall and 4 cm per side tall is OK</p><p>Should I use bigger case like 9.5cm whole tall ?? </p>
<p>Approximately how much does this all cost? </p>
<p>from what I remember it was about &pound;200. I built it from spare parts so I can't give an exact figure. I imagine you'll be able to build it for a little less than that now.</p>
<p>make a larger keyboard and a thinner case. seriously. also polish the wood or replace it with plastic, doesn't fit well.</p>
<p>can you make me one? how much</p>
Sir, I recommend a larger keyboard.
<p>Hi,</p><p>Check this shop out for the amp kit, </p><p><a href="http://www.rkonlinestore.co.uk/" rel="nofollow">http://www.rkonlinestore.co.uk/</a></p><p>Laters</p>
This is one of my first instructable but the battery is connected to the what
<p>Great project! I love homemade raspberry pi laptops ;)</p><p>Here's is a good webstore to buy the parts that you are using in your project: <a href="http://voltatek.com/en/7-raspberry-pi" rel="nofollow">http://voltatek.com/en/7-raspberry-pi</a></p>
I also am in need of a screen or a power source for my screen
how curious I am currently working on a raspberry pi laptop I call it the pi-top
I'm been thinking about making a raspberry pi umpc using a sylvania 7 inch laptop like the ones you can get at cvs pharmacy as a case. Does anyone know if the rpi will fit and if the circuitry such as the screen, battery pack, keyboard, ect. would work? <br> <br>UMPC stands for ultra mobile personal computer. (kinda like the open pandora) <br> <br>with that said please dont tell me about the red and black 3d printed cased one else has made, because that one is bulky and doesn't fold. i would try to build something much sleeker and more expensive looking.
Something like this?<br> <br> <a href="https://wiki.openjdk.java.net/display/OpenJFX/DukePad" rel="nofollow">https://wiki.openjdk.java.net/display/OpenJFX/DukePad</a>
Awesome! <br> <br>&iexcl;Alucinante! (In spanish)
What is this capable of? How much can it handle? Btw nice design mate.
It can do whatever a Raspberry Pi inside an aluminium flight case can do. Really it's a case of what can you do with it.
mate I will pay you cash + your time can you please make me one absolutely amAZING
How big and how heavy is the final product? <br>
Can you make me one? I will pay US dollars, name your price, I will pay for shipping and handling, I you want to make it! Thanks for listening, and bless your face! If you sneezed while reading this bless you, email me at nicholaslupo1@gmail.com <br> <br>
I scrolled already trough a billion pages on all diffrent sites how much did you pay for the case?
&pound;24.99 for 3 cases of different sizes. They were from Maplin.co.uk, but I can't find them listed any more.
Where can i get a cheap aluminum case
What is the weight with everything in it
how much does this cost overall in $
How much did this all cost?
Approximately &pound;250
Great project
Could someone please email pdf instructions as I am not a Pro memeber
Very nice! I have just ordered my Pi, and am interested in a laptop build. I like the fact that this one requires no 3d printing. I think i might give something like this a try!
romance, <br>your doing it right. <br>

About This Instructable


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Bio: A passionate make of things. Chief engineer for the BigBox 3D printer and inventor of the MicroSlice Mini Laser Engraver & Cutter. I spend my time ... More »
More by SilverJimny: Picture - The 3D Printed Raspberry Pi Camera. The MicroSlice V2 Aurum | A gold mini laser cutter & engraver. The SnapPiCam | A Raspberry Pi Camera
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