16v Mini Club Forums

16v Mini Club Forums (https://16vminiclub.com/index.php)
-   Other Non Mini Builds (https://16vminiclub.com/forumdisplay.php?f=44)
-   -   Raspberry Pi Laptop (https://16vminiclub.com/showthread.php?t=36230)

MattG 21-01-2015 07:29 AM

Raspberry Pi Laptop
 
first off , if you dont know what a Raspberry Pi is , its a very very cheap computer, runs a version of linux/others ,sort of a playground for big kids like me http://www.raspberrypi.org/

My daughter has just started a weekend Pi course at her local school (she is 14)

thought it would be good if we made a Pi Laptop together... not sure if it will work , only laptop we had was a small 10.1inch screen Netbook, Acer Aspire One.

First thing was to take it to bits ., not sure if it will be thick enough to hold a Pi ( its about 17mm thick ) but we can work around that later.

beers needed :

https://lh6.googleusercontent.com/1R...=w1199-h899-no

After taking it to bits i thought the best thing before spending money on a ebay display and driver was to get the keyboard to work first.

i have found a old USB keyboard, so i am just going to try and butcher that onto the 24pin connector of laptop keyboard first.

https://lh4.googleusercontent.com/-F...o/IMG_6304.JPG

as for display , i am look at these :

http://www.ebay.co.uk/itm/10-1-Inch-...item4188bc8baf

but i notice that they are 12v ! , was hoping oneday to use the laptop battery , but thats only rated at 11.2v ..
advice on this ? 1) can you get lower power hdmi drivers ? 2) is it unrealistic of me running it on a laptop battery ?

hope to strip down main keyboard tonight , might end in failure ...

MattG 21-01-2015 07:29 AM

small success on keyboard side

daughter took a logitec USB keyboard to bits , then proceeded to play with it

https://lh4.googleusercontent.com/-a...o/IMG_6307.JPG

removed driver board

https://lh4.googleusercontent.com/-J...o/IMG_6308.JPG

this had two connectors , 8pins and 18 pins.

https://lh5.googleusercontent.com/-m...o/IMG_6309.JPG

i thought that the 8 pins might be similar to the 6/18 pin connector i have , but its one connector..

one cut later , i have two connectors :

https://lh4.googleusercontent.com/-M...o/IMG_6310.JPG

so i plug in the 18 to 18 , and the 6 to the 8 ( down one end :) )

and plug it in !!!

it works !! .. well some letters work ,but not all , so i guess its my matrix on that keyboard is different .. anyway keys that do something when i press are :

F1,F2,F3,F4,F6,F7,F8,F9,F12,prntscreen,pause,del
1,2,3,5,7,9,-
tab,Q,P,@
caps,;,@
/,>
left arrow , right ,up and down arrows
page up

ok , these dont actually perform the correct keyboard function :) ..but i knew that would happen..

so advice ?what methods do i have of reverse engineering the matrix in both keyboards ?

MattG 21-01-2015 07:30 AM

after working out the matrix inside the keyboard is 1)different 2) pinouts in different places i decieded i needed to know the wiring diagram of the laptop keyboard

After a night of careful thinking , and a few stellas i thought i would rip the keyboard apart to find the matrix pattern

https://lh6.googleusercontent.com/-Y...o/IMG_6316.JPG

to be fair , i think i had cut the connector as well , so it was a bit damaged at this point

i then un peeled it , as its not two seperate layers

https://lh3.googleusercontent.com/-M...o/IMG_6317.JPG

i then traced the wires that go to the top layer ..., which i now know :

(this is looking at the top , with rubber keypads on top :

pins 1 to 26 ( pin 7 is blank and not connected )

pins 5,7,9,12,18,22,23,24 are the rows ( as i call them )

other pins are the columns of the matrix.

so i now need to map correctly to my USB driver out of my other keyboard,

I can now see why half the keys did not work.

ordered new keyboard .

now looking for a 24 pin CSI/DSI ribbon connector that i can use....cant find one yet

Add_Gee 21-01-2015 09:01 AM

Looks an interesting project, I've got a Pi but haven't done much with it other than setting up a media server using xbmc.

MattG 21-01-2015 09:22 AM

Quote:

Originally Posted by MattG (Post 357381)
now looking for a 24 pin CSI/DSI ribbon connector that i can use....cant find one yet

found me a connector and ordered , should have all i need to get keyboard working now..

well apart from key mapping at a OS level .. next thing

daveyjones 22-01-2015 03:58 PM

Might be fun with an arduino too http://www.ebay.co.uk/itm/UNO-R3-Ard...item2a48169f94


All times are GMT. The time now is 06:23 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.