No mod PSP joystick

[Knightsofwar210]

Oh okay, that's not a big deal the 2 usb devices thing, which one is the smallest chips? I have limited space to put it into my psp laptop :-) Thanks for your help.

[abcminiuser]

By "size" I meant the capabilities (FLASH, SRAM, Peripherals etc.) rather than the physical size - they're all surface mount, and the physically largest one is only about 1.2cm square. However, if you do purchase the raw chip with the intention of mouting it *in* the PSP, I'd wait for GR8 to publish instructions and prove it is possible, as you'd also need a DC-DC converter, caps, connector, etc.

The USBKEY is 9cmx3cm, so it's reasonably small by itself. Not small enough to mount it inside anything, but not too large to be a burden next to a joystick, keyboard, etc.

- Dean

[Knightsofwar210]

By "size" I meant the capabilities (FLASH, SRAM, Peripherals etc.) rather than the physical size - they're all surface mount, and the physically largest one is only about 1.2cm square. However, if you do purchase the raw chip with the intention of mouting it *in* the PSP, I'd wait for GR8 to publish instructions and prove it is possible, as you'd also need a DC-DC converter, caps, connector, etc.

The USBKEY is 9cmx3cm, so it's reasonably small by itself. Not small enough to mount it inside anything, but not too large to be a burden next to a joystick, keyboard, etc.

- Dean

Oh I was talking about physical size, 9cm x 3cm isn't bad I can fit it in then, so I'll buy that and then wait for GRB to provide us with the wiring schematics on how to attack the serial cord to the chip, sounds good then oh and how to attact it to a power source :-) Thanks for your help.

[abcminiuser]

The USBKEY requires 8-15V input, and comes with a 9V battery adapter in the box. If GR8 designs a DC-DC converter to power it from the PSP, you would be able to power both the PSP and the board/USB device from the same battery. The USBKEY regular is a standard linear regulator however, and so there would be a bit of wasted power if it has to go PSP Battery->DC-DC Converter->Liner Regulator->Chip/USB device.

- Dean

[gr8npwrfl]

Yes I am doing the wiring diagram to hook the at90usb key to the psp and I will post that tomorrow.

Dean is the creator of the USB library functions my applications are written on.

I have found the AT90USBKEY is the best board to play with in conjunction with the PSP
as all the parts it comes with make it easy to use. The only other thing you will need is
a cable from a remote headphone volume control.

Without building a DC to DC converter to power the USB devices you can use the
supplied 9 volt power plug and a 9 volt battery.

I will upload the schematic and wiring diagrams tomorrow.

[Knightsofwar210]

Awesome! I just ordered that kit that you mentioned above, I can't wait! Oh and I bought if from digikey.com with like 1.50$ taxes with us mail first class mail, does anyone know how much first class mail is? It said unknown for all the different shipping types.

[LUDATIC81]

i bought the kit from mouser it said the same thing to me about postage it was like 5 to 7 bucks in the US wasnt a big deal.

[Knightsofwar210]

i bought the kit from mouser it said the same thing to me about postage it was like 5 to 7 bucks in the US wasnt a big deal.

Oh okay that's not too bad thanks man 

[Knightsofwar210]

Digikey shipped my chip the same day I ordered it, Hey it's been a day now and I am eagerly awaiting the schematic 


Did you die? 

[gr8npwrfl]

No I did not die, I had to finish another project for work and it was crunch time.

I will be uploading the docs today.

I will add it to this post

[Knightsofwar210]

No I did not die, I had to finish another project for work and it was crunch time.

I will be uploading the docs today.

I will add it to this post

I figured that happened, my dad has to work overtime all the time to finish his projects.

Edit: What version of Pikey do I need? My psp is running 4.01 M33-2.

dslitemodder: Please don't double post.

[gr8npwrfl]

USB to Serial Wiring for AT90USB Demo Hardware Build and Setup

Required Tools:

1. Soldering Iron
2. Solder
3. Wire Strippers
4  Side Cutters
5. Static Wrist Strap
6. Small Jewelers Philips Screwdriver ( Same one used to open the PSP )
7. Small file, or sandpaper, or Dremmel
8. Ohm Meter to measure resistance

Note: If you need to know how to use your multimeter read my tutorial here:

https://www.acidmods.com/forum/index.php?topic=23202.0

Required Parts:

1. AT90USB Key Demo Board
1. Old PSP Headphone remote control
1. MAX3232CPE NOTE: Make sure this is the Maxim 2.5 volt part not the TI part
5. .01 uf ceramic capacitors
1. 16 Pin IC Socket
1. Small Piece of prototype board
1. DB9 Female Connector
3. 4 pin sockets of some kind
2. 4 pin plugs that mate to the sockets
1. Foot of 4 conductor wire.
1. 2" x 4" Case for AT90USB demo board
1. 2" x 2" Case for RS232 level converter
1. 26 to 30 guage wire wrap wire about 1 foot
1. Small Shrink tubing about 1/8 inch dia
1. Larger Shrink tubing about 1/2 inch dia

Required Software for the PSP

PiKEY for the PSP with the Serial Port Patches

Level of Difficulty: Moderate

Here is the schematic of the AT90USB demo board to PSP




Step One.


Note: You can buy the connectors at this website if you do not
         want to tear apart a remote control:

http://pc-mobile.net/pspslim.htm

Prepare the Headphone/Serial Remote Cable:



The Wire in the remote headphone controls is a material fiber with a single strand of
copper in it. The wire is very difficult to strip and tin to get ready for soldering.
It is much easier to use the tinned end that is already soldered inside the remote
control.

1. Turn unit over and remove the Screws from the remote control



2. Remove the case from the remote control

3. Unsolder the cable from the printed circuit board

4. Set the case and all the plastic parts aside, all you want is the cable
   with the plug end on it for the PSP.


   
5. We are only going to use 4 wires on either the PSP 1000 or 2000 for right now



Step Two


Obtain the Connectors

You can use any four pin miniature connectors you want. I found the connectors
that are used to connect CD Rom drives to the computer sound cards work really
well as they are very tiny and strong as well as locking. I had an old sound
card laying around and I stole the connector jacks from that. The cable that runs
from the CD Rom to the sound card has the matching plugs on each end.

If you are going to build the RS232 level converter so you can hook your AT90USB
demo board up to your PC you will need two of these cables. One to run from
the demo board to the level converter and the other to get the plug from to put
on the end of your PSP cable.

Here is a picture of the sound board I took the connectors from



Here is a picture of one of the connectors



Here is a picture of the jumper cable with connectors





Step Three


Putting the AT90USB demo board in a case:


The wire wrap wiring is fragile and will not take a lot of abuse. That is
why I mounted my AT90USB demo board in a temporary case. I purchased the case
from Radio Shack and it is a perfect fit for the demo board. With the board
mounted at the top of the case it leaves room for another board underneath,
( This is where we are going to install the DC to DC converter later ).

I am sorry I did not do pictures while I was building the case but will show
closeups of the completed case.

1. Trim the case cover screw posts down about a quarter inch.
   ( These are the four posts with holes in them the cover screws to )
   
   This allows the demo board to set down in the top of the case slightly
   

2. Take your sandpaper, or file, or Dremmel and make small notches at the
   corners of your demo board so you can see the holes in the mounting posts
   that you cut down.


   
   NOTE: Make sure and blow off the demo board when you are done as you may
         have ground a little copper on the demo board and you do not want
         to create any shorts.

3. Note the locations of the two main connectors on the demo board. One is the
   9 volt power connector and the other is the USB connector.
 
   A. Mark your case  as we are going to make some slots in the case. Make sure
      you mark how far   the connector set into the case and add about a 1/10 of
      an inch extra.
 
   B. Remove the demo board and set aside.
 
   C. Cut the plastic of the case to make your cutouts for the USB and Power.
 
   D. Take two of the connector jacks that you obtained in Step Two and mark
      the case on one of the long sides so the two connectors are spaced
      equally lengthwise and about half way down from the top.
 
      ( make the hole tight as these connectors are not panel mount and we
        will have to superglue them in place. )
 
   E. Cut the holes for the two connectors in the case.
 
4. Take the Two four pin connectors and solder about 3 inches of wire wrap
   wire to each pin of the connectors and let it stand out straight
 
5. Insert the two connectors through the holes you made for them in the case
   and push them about 1/2 the way in. Super Glue the connectors in place.
   
6. The pins are numbered 1 to 4 starting at the left side of the connector
   looking down from the top.

7. On the left connector fold the wire down on pin 4 and curl it up so it does
   not touch anything. ( We will use this wire in future tutorials from the
   DC to DC converter )
   
8. Jumper the left connector pins 1,2,3 over to the right connector pins 1,2,3
   You are now left with the four wires sticking out from the right connector.
   Fold them up along the side of the case so when you insert the demo board
   they are sticking up in the air.
 
9. Insert the demo board and hold it in place with the four screws that were
   made to hold the cover in place.
   ( The demo board is now captured in the case and won't move. )

Note: The connector we are using on the demo board is J4 it is located next
      to the Jtag connector and is numbered like so:

     

10.A. Pin number 1 (on the connector) is ground and we are going to hook that
      to the demo board at J4 Pin 2
   B. Pin number 4 (on the connector) is 3 volts and we are going to hook that
      to the demo board at J4 Pin 1
   C. Pin number 2 (on the connector) is tx data and we are going to hook that
      to the demo board at J4 Pin 7
   D. Pin number 3 (on the connector) is rx data and we are going to hook that
      to the demo board at J4 Pin 6
     
Here is a picture of the completed unit




Step Four


Making a PSP Connector Cable

Note: The colors of the wires vary according to who the manufacturer that
      made the remote was. We will have to find the correct wire by using
      our multi meter.

1. Use these pictures if you have a PSP 1000 (Phat)





2. Use these pictures if you have a PSP 2000 (Slim)






   A. Take the cable that you obtained in step one
   
   B. Get your surplus CD Rom cable
   
   C. Cut the wire to one end of the cable about 1 inch from the connector
   
   D. Remove the outer jacket insulator exposing the four wires.

   E. Get the two sizes of shrink tubing
     
      1. Cut 3 1/2 inch pieces of shrink tubing small size
      2. Cut 1 1 inch piece of shrink tube larger size
      3. Slide the larger shrink tube over the PSP cable

  F. Find the wire that comes from the psp connector ground slide one
     of the small pieces of shrink tube over the  wire. Solder that
     to the wire that comes from the CD plug pin 1 and then shrink
     the tubing.
 
  G. Find the wire that comes from the psp connector pin 2 and slide one
     of the small pieces of shrink tube over the  wire. Solder that
     to the wire that comes from the CD plug pin 4 and then shrink
     the tubing.
     
  H. Find the wire that comes from the psp connector TXD (transmit data)
     and slide one of the small pieces of shrink tube over the wire.
     Solder that to the wire that comes from the CD plug pin 2 and then
     shrink the tubing.

  I. Find the wire that comes from the psp connector RXD (receive data)
     and slide one of the small pieces of shrink tube over the wire.
     Solder that to the wire that comes from the CD plug pin 3 and then
     shrink the tubing.
     
  J. Slide the large shrink tubing over all your connections so it covers
     the small shrink tubing and supports the two different cables so
     they appear as one continuous cable.
     
 
  The finished cable should look like this:

 




Step Five


RS232 Level Converter

This level converter is used for many things.

1. You can plug in your PSP cable to the converter and by running
   Hyper terminal you can see debug information that is sent when
   programming the PSP.

2. It plugs into the AT90USB demo board and allows you to see debug
   information that is programmed into the demo board software.

3. You can plug in most RS232 devices and control or read from them
   over the RS232 port.
   
Schematics:

http://mysite.verizon.net/restxsa0/PSP_Serial_Converter.pdf

Procedure:

1. Cut the proto board to fit in the 2 inch by 2 inch plastic box

2. Mount the 16 pin socket in the middle of the board

3. Wire the socket with all the caps inserted

4. Cut out the plastic box to mount the DB9 Connector at one end

5. Cut out the hole for the CD Rom audio connector

6. Attach the 4 three inch wires to the the CD Rom connector

7. Insert the CD Rom Connector 1/2 and glue with Super Glue.

8  Attach 3 three inch wires to the DB9 connector

9. Mount the DB9 Connector to the box

10.Solder the TXD,RXD, and ground wires from the DB9 to your proto board

11.Solder pin 1 of the CD Rom connector to the ground of your proto board

12.Solder pin 2 of the CD Rom connector to the TX data of your proto board

13 Solder pin 3 of the CD Rom connector to the RX data of your proto board

14.Solder pin 4 of the CD Rom connector to the Power of your proto board

Optional you can hook a led and resistor across the power and ground so
you can see when the PSP is powering the RS232 Level converter.

15.Plug the chip into the socket making sure you place it in the correct
   direction.

Here is a picture of a completed interface:



Note: The green over the CD Rom connector is a panel mount led lamp



Note: The extra connector over the DB9 is power in so I can use this
      interface on other projects.


Conclusion:

     
This concludes the hardware part of interfacing the AT90USB demo board
to the PSP. In the next part we will go over how to program the demo board
and set the PiKey software up in the PSP.

[Knightsofwar210]

Thank you so much!!! I thought all I needed was that chip and the remote cables, why do I need to make that other cable and that box to get my keyboard hooked up?

[abcminiuser]

The other box allows you to connect the board to the computer instead of the PSP for debugging and (I assume) configuration. You can ignore it if you just put any configuration settings into the firmware at compile time.

Actually, I would suspect that all the mapping is done on the PSP end, so you wouldn't even need the PC converter for configuration.

- Dean

[LUDATIC81]

Right on, i knew i took the day off tomorrow for a reason. cant wait to get it going. thanks for the work as always i appreciate it.

[gr8npwrfl]

That's correct if you are not doing software development you do not need the converter box.

There are debug messages that are sent out the serial port during program debugging.
Once the code is running then the debug messages are turned off and the serial port
is only used to connect to the PSP.

The code that I am working on for the joystick, has a raw untranslated mode that sends the
packets from the joystick to the PC and I have an RS232 analyzing program that captures
and displays the packets on the screen of the PC. I can compare those packets to the ones
I get from my USB monitor program to make sure I am not dropping data from the joystick.

Also the code that is written on the PSP makes use of the serial port to dump out debug
information so that graphical formatting on the screen is not affected.

The box also is used with my pic processor projects to send serial debug data in real time
to the PC.

If you are not going to write software you do not need it at all. All programming of the memory
on the demo board is done through the USB port that is built into the demo board.

In the next tutorial I will be supplying the hex code so you can program the demo board yourselves
through the USB port. Once the compatibility with Dean's new library is tested then I will release
the usb keyboard source code. Then people can work with it themselves and compile it and debug
for themselves.

Right now I have the driver about 75% done for the XBOX 360 controller. I am receiving the maps
99% of the time from the gamepad correctly. As soon as I find the bug in the receiving part I will
move on to the mapping section that converts gamepad buttons to keystrokes.

I will then have to write a simple program that allows the PSP to send key maps to the flash of the
demo board for remapping on different games

later

[Knightsofwar210]

  You are gifted! Hey where I get the 4 pin plugs from? What type of wires or what store can I get them from?

[gr8npwrfl]

You can use any type of 4 pin connectors you want.

The ones I use are stolen off an old sound board and the cable is the one that goes from the
CD rom to the sound card.

You can get the boxes, caps, wire, and connectors at Radio Shack

[Knightsofwar210]

You can use any type of 4 pin connectors you want.

The ones I use are stolen off an old sound board and the cable is the one that goes from the
CD rom to the sound card.

You can get the boxes, caps, wire, and connectors at Radio Shack

Oh wow, I got it from an old telephone wire thing, where you connect this splitter to the wall then it has two connections one for phone and the other for internet so I ripped out the cord and I cut out one of the boxes, the only thing is that the soldering points on the box are really small, so I'll have to extra careful.

What version os Pikey do I need? I have 4.01 M33-2 on my PSP and I cannot find a version that is compatible with it, Oh and I'm still not sure where to solder my box to on the chip. Thank you very much for your time and effort, this will definately bring in some more modding ideas for the psp, the psp modding scene is not over, not even close! 

[gr8npwrfl]

I have the code that is modified for the PSP using a the serial port.

I just uploaded it to my server and I am writing up the programming tutorial
right now.

It will have a step by step complete tutorial as well as the download of all
the code.

I will probably finish that yet tonight and will upload the tutorial with all
the links tomorrow.

Also,

For the people that wanted to know what would be used for the internal PSP
mod look at this:



Only the areas blocked out are what is used in the internal mod
so yes it should fit behind the WiFi board.

And the crystal does not have to be that big.

Later

[Knightsofwar210]

Hey I'm a little confused on step 4, I'm using a fat psp remote and it says on step F to solder the wire that comes from the psp connector ground, which wire is that? It's my last wire to solder for step 4. Thanks!

Oh and is it possible to make the keyboard driver so you can hold down the escape 3 seconds so the psp turns on or off? Thanks!

[Techni]

I don't suppose we could use that    "PSSGH - Holux GPSlim 236/240/M1000 cable for PSP Slim"

[gr8npwrfl]

I will look into powering the psp on and off with a keystroke.

You can use any cable you want.

[niko86]

Holding the XBOX logo on the 360 pad for 3 seconds just like on the xbox itself would be a good feature

[gr8npwrfl]

The final unit plugs into the PSP serial port and gets it's power
from the PSP. I could map a key to turn it off because the external
processor has power at that time. I could not turn it on as
the PSP has no serial port running at that time.

Sort of the chicken and the egg scenario

[LUDATIC81]

ok so im making the cable (psp1000) and im not sure but you say to take the psp connector ground and solder that to pin 1 on the sound card cable, then you say take the wire from psp connector 2nd pin and solder that to card cable pin 4. well psp connector pin 2 is the psp digital ground should i be using audio ground rather than digital ground. that would mean  card cable pin 1 is audio ground and card cable pin 4 is digital ground. ive read it like 15 times so maybe ive just jacked it up in my head, please clarify for me. thanks, heres the steps im talking about, thanks again.

F. Find the wire that comes from the psp connector ground slide one
     of the small pieces of shrink tube over the  wire. Solder that
     to the wire that comes from the CD plug pin 1 and then shrink
     the tubing.
 
  G. Find the wire that comes from the psp connector pin 2 and slide one
     of the small pieces of shrink tube over the  wire. Solder that
     to the wire that comes from the CD plug pin 4 and then shrink
     the tubing.

[gr8npwrfl]

No you need to use digital ground as we are digital conversion right now.

If we choose to use the sound we will use that with the analogue ground. Thinking about
an amp with computer subwoofer, after the basic drivers are all done.

later

[LUDATIC81]

ok right, digital ground thats what i figured. in the psp pin diagram you have digital ground as pin 2 and in step F. you say take psp ground and solder that to cd cable pin 1 then in step G. you say take psp pin 2 and solder that to cd cable pin 4. so that says to me that psp ground goes to cd cable pin 1 and 4 since psp ground is psp pin 2. am i totally confused or what?

[gr8npwrfl]

you are not confused

[LUDATIC81]

ok if im not confused then for the sake of me wondering why.
why do we need two of the cd cables 4 pins spliced into the one digital ground?
thanks