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Author Topic: 7 Inch Pac-Man  (Read 15181 times)

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SpaceHedgehog

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Re: 7 Inch Pac-Man
« Reply #40 on: June 30, 2012, 03:38:35 am »
That's an awesome little cabinet you have there  :applaud:
Click a pic for a video tour 

Los Abrazos Rotos

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Re: 7 Inch Pac-Man
« Reply #41 on: June 30, 2012, 04:29:41 am »
Great job!  :applaud:

Drakin

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Re: 7 Inch Pac-Man
« Reply #42 on: June 30, 2012, 04:42:35 pm »
 :applaud:Brilliant!!

cypher33

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Re: 7 Inch Pac-Man
« Reply #43 on: July 10, 2012, 10:04:17 am »
I'm having major issues witht the joystick!! Could you give me some advise please?
Scott,

I really appeciate your response to my vague description regarding the joystick. I've wired the digistick the same way as best that I can work out from the pictures but for some reason it still wont work. Thanks fo the PDF by the way. I've soldered so many times now that I'm worried I may have damaged the gba board.

I'll try and post some pics to see if you think I've done it wrong.

Lewis



Moo

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Re: 7 Inch Pac-Man
« Reply #44 on: July 10, 2012, 10:54:00 am »
Great looking project!

PL1

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Re: 7 Inch Pac-Man
« Reply #45 on: July 10, 2012, 11:45:39 am »
I've wired the digistick the same way as best that I can work out from the pictures but for some reason it still wont work. Thanks fo the PDF by the way. I've soldered so many times now that I'm worried I may have damaged the gba board.

Before you do any more soldering/desoldering try these checks:

Verify no crossed wires/shorts.
1. Power the system down.

2. Put multimeter in Ohms.

3. Connect the meter leads to the joystick to verify very high resistance (>1 MegOhm) between the 10 pairs of pins listed below.  There should be no shorts (1-2 ohms) unless the joystick is pressed.

1-2, 1-3, 1-4, 1-5
2-3, 2-4, 2-5
3-4, 3-5
4-5


Verify joystick is functional.
1. Power the system down.

2. Put multimeter in Ohms.

3. Connect one lead of your multimeter to the center pin and the other to one of the outer pins.

4. Meter should read open.

5. Press joystick in all 4 directions. (U, D, L, R)  Only one direction should read a short. (1-2 ohms)

6. Change multimeter lead to different outer pin, repeat steps 4 and 5.

7. Repeat step 6 until all outer pins have been checked.


Scott

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Re: 7 Inch Pac-Man
« Reply #46 on: July 10, 2012, 11:56:54 am »
I've wired the digistick the same way as best that I can work out from the pictures but for some reason it still wont work. Thanks fo the PDF by the way. I've soldered so many times now that I'm worried I may have damaged the gba board.

Before you do any more soldering/desoldering try these checks:

Verify no crossed wires/shorts.
1. Power the system down.

2. Put multimeter in Ohms.

3. Connect the meter leads to the joystick to verify very high resistance (>1 MegOhm) between the 10 pairs of pins listed below.  There should be no shorts (1-2 ohms) unless the joystick is pressed.

1-2, 1-3, 1-4, 1-5
2-3, 2-4, 2-5
3-4, 3-5
4-5


Verify joystick is functional.
1. Power the system down.

2. Put multimeter in Ohms.

3. Connect one lead of your multimeter to the center pin and the other to one of the outer pins.

4. Meter should read open.

5. Press joystick in all 4 directions. (U, D, L, R)  Only one direction should read a short. (1-2 ohms)

6. Change multimeter lead to different outer pin, repeat steps 4 and 5.

7. Repeat step 6 until all outer pins have been checked.


Scott

I remember the first time I tried soldering the digi mini joystick I held the soldering iron on the ground pin for to long and It messed up the connections on the inside. I ended up buying a couple of these because I suck at soldering. If your running out of soldering points you could always trace back a little on the GBA and scrape away to open up a new soldering points, just be careful not to over due it.

cypher33

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Re: 7 Inch Pac-Man
« Reply #47 on: July 10, 2012, 05:44:05 pm »
I've wired the digistick the same way as best that I can work out from the pictures but for some reason it still wont work. Thanks fo the PDF by the way. I've soldered so many times now that I'm worried I may have damaged the gba board.

thanks scott, this is just the sort of help I need. I'm gona crack on this week and follow your instruction. I'll let you know how I get on ;)

Cheers again,

Lewis

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Re: 7 Inch Pac-Man
« Reply #48 on: October 05, 2012, 02:48:58 pm »
Hello , i'm try to build my own mini arcade using GBA SP as you described.....
but i think i damaged the button

... :cry: :cry: :cry: :banghead: :banghead:

any chances to repair it? :notworthy: :notworthy: :notworthy:
anyone welcome for suggestion...please help this is my only one GBA ..thanks

Mungo9000

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Re: 7 Inch Pac-Man
« Reply #49 on: October 09, 2012, 04:36:11 pm »
Yeah, I see what you did.
I'm not sure if it's FUBAR or not, I never peeled back the buttons that far. My guess is that it isn't. I can see four contact points in each corner where the button used to be, but I can't see anything in the middle, this suggests to me that the button press is making a contact between the top two corner contacts and the bottom two.

Looking at your image closely, the top two seem connected and I would make a guess that these are the switch and the two lower corner contacts are the common/ground.
You need to power up the unit and try putting a piece of wire between the top and bottom contacts to see if it works.

This is a super fiddly job but the end results can be great.
Good Luck.

griffindodd

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Re: 7 Inch Pac-Man
« Reply #50 on: October 10, 2012, 05:02:45 pm »
Well done, an excellent build and a great way to learn some lessons before thowing yourself into a bigger cab. In fact you'll probably find a bigger cab easier in many aspects due to the tiny scale you were forced to work at on this build.

lohkoqz

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Re: 7 Inch Pac-Man
« Reply #51 on: October 14, 2012, 08:02:55 am »
Yeah, I see what you did.
I'm not sure if it's FUBAR or not, I never peeled back the buttons that far. My guess is that it isn't. I can see four contact points in each corner where the button used to be, but I can't see anything in the middle, this suggests to me that the button press is making a contact between the top two corner contacts and the bottom two.

Looking at your image closely, the top two seem connected and I would make a guess that these are the switch and the two lower corner contacts are the common/ground.
You need to power up the unit and try putting a piece of wire between the top and bottom contacts to see if it works.

This is a super fiddly job but the end results can be great.
Good Luck.

Thanks for your advice..
will try to connect 4 contact point
i will report as soon as i fix it

wooodyii2

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Re: 7 Inch Pac-Man
« Reply #52 on: December 28, 2012, 08:57:59 pm »
What was the PN for the buttons?

PL1

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Re: 7 Inch Pac-Man
« Reply #53 on: December 28, 2012, 09:19:38 pm »
Welcome aboard, Wooodyii2.

What was the PN for the buttons?

Based on this post, I think he used these.


Scott