USB Game Pad Mod Question

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USB Game Pad Mod Question
Posted on: 26.05.2010 by Joan Kollmorgen
Hi my plan is to mod a couple of USB Game Pads.
Something like these.

Joan Kollmorgen
08.06.2010
I'm Just about to order all the parts for my case but still have a few more questions.

I've decided to add a couple of a couple of rotary potentiometers to each case so i am now going for game pads with thumbsticks on.

Would these potentiometers be ok to use? 16MM 10K LIN. COMMERCIAL POT?



16mm diameter carbon track single potentiometers suitable for PCB mounting offered in a range of popular values.

Dimensions 17 x 16.5mm
Pitch 5mm
Tolerance 20%
Power rating 0.2W linear, 0.1W log.
Maximum voltage 200V linear, 150V log.
Electrical rotation 300
Joan Kollmorgen
08.06.2010
I'm Just about to order all the parts for my case but still have a few more questions.

I've decided to add a couple of a couple of rotary potentiometers to each case so i am now going for game pads with thumbsticks on.

Would these potentiometers be ok to use? 16MM 10K LIN. COMMERCIAL POT?



16mm diameter carbon track single potentiometers suitable for PCB mounting offered in a range of popular values.

Dimensions 17 x 16.5mm
Pitch 5mm
Tolerance 20%
Power rating 0.2W linear, 0.1W log.
Maximum voltage 200V linear, 150V log.
Electrical rotation 300
Joan Kollmorgen
08.06.2010
I'm Just about to order all the parts for my case but still have a few more questions.

I've decided to add a couple of a couple of rotary potentiometers to each case so i am now going for game pads with thumbsticks on.

Would these potentiometers be ok to use? 16MM 10K LIN. COMMERCIAL POT?



16mm diameter carbon track single potentiometers suitable for PCB mounting offered in a range of popular values.

Dimensions 17 x 16.5mm
Pitch 5mm
Tolerance 20%
Power rating 0.2W linear, 0.1W log.
Maximum voltage 200V linear, 150V log.
Electrical rotation 300
Joan Kollmorgen
08.06.2010
I'm Just about to order all the parts for my case but still have a few more questions.

I've decided to add a couple of a couple of rotary potentiometers to each case so i am now going for game pads with thumbsticks on.

Would these potentiometers be ok to use? 16MM 10K LIN. COMMERCIAL POT?



16mm diameter carbon track single potentiometers suitable for PCB mounting offered in a range of popular values.

Dimensions 17 x 16.5mm
Pitch 5mm
Tolerance 20%
Power rating 0.2W linear, 0.1W log.
Maximum voltage 200V linear, 150V log.
Electrical rotation 300
Shay Wyche
03.06.2010
Originally Posted by extraclassic
Thanks Archies'bald.

Would i need to use resistors for the leds?
I would assume so. It won't do any harm putting them in, but it might do if you leave them out. From memory it's 330 ohm resistors I believe, but double check that with someone else.
Shay Wyche
03.06.2010
Originally Posted by extraclassic
Anyone know if it would be possible to power a couple of buttons with leds in from a game pad?

And maybe some info on how to do it.

Thanks
I don't see a problem really. Most gamepads power two rumble pads which we don't use. I imagine they will take a fair percentage of the available power. Don't ask me how many LEDS you could power, I don't know, but I'm pretty sure you could power one for each button if you aren't using all the buttons at the same time. There has to be a bit of diversity included in the power calculations.
Wava Egizi
07.10.2010
I bougth these:
http://cgi.ebay.com/USB-GamePad-Doub...item255b803f30

$0.99 beats everything

Check my project!
Nadia Shelmadine
07.10.2010
I finally decided to do some mods of my own too. This is pretty close to something i had in mind. I have ordered 10 arcade buttons and a "double gamepad" like this:
http://cgi.ebay.com/USB-Dual-Double-...item27a1b64462
So it's pretty much the same as the one in first post. I'm not planning to do any knobs, only two controllers linked together with 5 buttons each. I know i couldn't have done that with only one controller, but that cord that splits the controller might be tidier than doing my own. Plus it wasn't that much more expensive and it leaves me opportunity to develope the controller if i feel like it in the future.
So basically i'm building a poor man's Dicer with 4 cue points on each side of my mixer vertically. Plus one extra button for sync or something.

So my question is that have you opened that dual gamepad? Is it easily hackable? (mine hasn't arrived yet from China)

One tricky thing will be of course that i'm using a Mac. I don't really know how to make a gamepad work in Traktor. I need some software that converts hid to keystrokes or midi.

My total costs so far: 20$ (casing and wiring will be free from work)
My work in progress: 20% (needed parts ordered)
Joan Kollmorgen
09.06.2010
I ended up ordering a few of each potentiometer hoping i can get one of them to work ok.

As for the Game pads - I didnt get the ones pictured in the first post i got some with analog sticks. All thats left to order now is some Plastazote foam and some protective corners for the case.
Latia Pfleider
09.06.2010
22 awg is the size of the wire I use. I take it out of network cable because I have lots of it. I did not find the pot I normally use on any of the uk sites.


I just noticed the lack of analog sticks on those controllers you have so im wondering how your going to use the pots also in you designs I only see buttons
Joan Kollmorgen
09.06.2010
Thanks for the advice Kaleaf.

Im trying to cut down on shipping costs by ordering parts from as few websites as i can.
All the cables , knobs, connectors........ will be from one company.

The only 10k lin pots with solder tags that i can see have got 50mm shafts.
Would it be possible to cut them down to size?

I use 22 awg wire that I pull from my spool of cat-5 network cable and solder with a water based flux core.
You totally lost me there. Any chance you could point me in the right direction for some cable/wire that would be suitable from the same website?.
Bearing in mind ive got to solder to the game pad pcb too.

By the way i ordered all the arcade buttons last evening (20 x sanwa obsf-30)
also ordered the game pads plus a few other things.

Cant wait to get busy.

Let me know as soon as you can so i can order them .......Thanks
Latia Pfleider
09.06.2010
Your pot should be solder lug type unless you are using a pcb (it will have a hole in it for the wire) and I would find what cap you want before you pick your pot. If you need some help let me know.

I use 22 awg wire that I pull from my spool of cat-5 network cable and solder with a water based flux core.
Joan Kollmorgen
08.06.2010
I'm Just about to order all the parts for my case but still have a few more questions.

I've decided to add a couple of a couple of rotary potentiometers to each case so i am now going for game pads with thumbsticks on.

Would these potentiometers be ok to use? 16MM 10K LIN. COMMERCIAL POT?



16mm diameter carbon track single potentiometers suitable for PCB mounting offered in a range of popular values.

Dimensions 17 x 16.5mm
Pitch 5mm
Tolerance 20%
Power rating 0.2W linear, 0.1W log.
Maximum voltage 200V linear, 150V log.
Electrical rotation 300
Joan Kollmorgen
03.06.2010
Ok Thanks again. I'm just tring to get a parts list together.
Shay Wyche
03.06.2010
Originally Posted by extraclassic
Thanks Archies'bald.

Would i need to use resistors for the leds?
I would assume so. It won't do any harm putting them in, but it might do if you leave them out. From memory it's 330 ohm resistors I believe, but double check that with someone else.
Joan Kollmorgen
03.06.2010
Thanks Archies'bald.

Would i need to use resistors for the leds?
Shay Wyche
03.06.2010
Originally Posted by extraclassic
Anyone know if it would be possible to power a couple of buttons with leds in from a game pad?

And maybe some info on how to do it.

Thanks
I don't see a problem really. Most gamepads power two rumble pads which we don't use. I imagine they will take a fair percentage of the available power. Don't ask me how many LEDS you could power, I don't know, but I'm pretty sure you could power one for each button if you aren't using all the buttons at the same time. There has to be a bit of diversity included in the power calculations.
Joan Kollmorgen
03.06.2010
Anyone know if it would be possible to power a couple of buttons with leds in from a game pad?

And maybe some info on how to do it.

Thanks
Arcelia Siebeneck
31.05.2010
has anyone tried Hubi's joypad to midi program?
Arline Gruel
30.05.2010
try Joy2Key

http://www.electracode.com/4/joy2key...%20Version.htm
Arcelia Siebeneck
30.05.2010
I believe it converts analogue signals to mouse movements so not sure how much use that is in a midi world.
Shay Wyche
30.05.2010
Can anyone who bought the Xpadder software tell me if it converts analogue signals, or is it just keyboard/digital?

Ta.
Joan Kollmorgen
29.05.2010
i have done this with 2 controllers myself use xpadder works a dream
For the little money it cost i decided to buy Xpadder last evening and couldnt agree with you more CassoIVchoon.
Its a great program and has given me lots of ideas.

I like your idea - but the housing for a turntable looks a bit bulky to me. It'll be nice to have it flush with the turntable, though...
Heres the latest render. (thinner wood, thicker foam)


To be honest theres not that much difference compared to other deck cases.

Example:

Roadready RR1200BMKII
H = 244mm
W = 544mm
D = 437mm

My case
H = Not 100% sure yet
W = 514mm
D = 484mm (I can reduce the depth some more when i find out measurements of game pad board)

So my case would be 30mm less in width and 47mm more in depth.
Not much bigger to add the power of 8 arcade buttons

Also i plan to remove the ground wire from the decks and add a female usb, power socket and rca to the rear of the case = NO WIRES (yippeeee)
Brunilda Kora
29.05.2010
I thought about doing this - but I was gonna do 2 rows of 8 arcade buttons (using a single controller) and mount it behind my mixer.

I like your idea - but the housing for a turntable looks a bit bulky to me. It'll be nice to have it flush with the turntable, though...
Kandy Ahdoot
29.05.2010
i have done this with 2 controllers myself use xpadder works a dream
Joan Kollmorgen
28.05.2010
nice renders btw - did you do that in google sketch up pro? did you model everything yourself? feel like sharing the project files?
Yes Milo i used Sketchup. Great program for jotting ideas down.

If your after the Technics model? you can get it from here.

http://sketchup.google.com/3dwarehou...22&prevstart=0
Arcelia Siebeneck
27.05.2010
Glovepie will allow you to use different midi channels for each device.

If you want to use keyboard mapping then I'm guessing you'll need some sort of program that will convert the gamepad presses into keyboard presses?

edit: nice renders btw - did you do that in google sketch up pro? did you model everything yourself? feel like sharing the project files? :P
Joan Kollmorgen
26.05.2010
Edit .... Someone posted this, but I've not tried it, and it costs around 6 quid. http://www.xpadder.com/
Thanks for the link.

It would be nice if i didnt have to use any middle software, but if its not possible then i believe that program could be the answer
Joan Kollmorgen
26.05.2010
I was hoping to use keyboard mappings in Traktor to avoid using a midi translating program.
Sorry i should have mentioned that before.

Thats why i was wondering if 2 identical controllers would conflict with each other?
And what are the possible solutions?
Shay Wyche
26.05.2010
Apparently you can use Glove Pie to do this with multiple controllers. I've yet to master it myself. I have had success with rejoice, but that only allows one controller at a time.

As far as Traktor goes, if you set your controller section to accept all Midi, then you should be fine.

Edit .... Someone posted this, but I've not tried it, and it costs around 6 quid. http://www.xpadder.com/

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