Because its a bad idea. Use the four holes that are labelled with colors, or if you absolutely have to, use a multimeter to see which holes in the 2x2 is connected to the labelled holes.
I see it now: sorry about that. I was thrown off because there was only metal on one side of the Imp on said column and not both.
Thanks.
Yeah, I wanted the exposed metal only on the bottom so that there wouldn’t be a chance of them touching the metal casing if you used a USB jack. Soldering the USB wire to those four holes should be the absolute easiest way for you to do that mod.
Im planning on putting my custom stick together soon and wondering if this wiring is correct before I actually solder the wires. I took some of the pictures from the forum and edited with the IMPv2 since I only see the set up with only IMPv1 around. I wont be using the USB port. Instead I’ll be using the RJ45. Just questioning if this is correct?
http://i6.photobucket.com/albums/y246/gangstatien/gangstatien/RJ45Imp2McCthulhuxbox.jpg
Yup, looks like you got the right idea. Dpad and buttons need connected to the matching Cthulhu screw terminals, and there’s the question of what, if anything, you need to do for the triggers, but the main wiring is correct.
Thanks toodles. I’m still debating if I’ll be hooking up the triggers since my stick will be six buttons. Debating if I should put the trigger buttons on the side of the case.
Is there anything else I can check? Maybe it’s an MC Cthulhu problem?
I ran into the same problem a while back. Read posts 385 (this thread) onward for the solution
Might not be able to change it now, but for your reference in the future =)
Hey toodles, I’m soldering most of the wires atm and I’m using a 360 pcb out of the brawl fightpad instead of a 4716. I was wondering instead of using the screw terminals for the Red USB wire and Black USB wire, can I solder the the Red USB wire to Point A on the MC Cthulhu and Black wire to Point C in the A-H, 1-9 columns?
Edit. So far I have the MC Cthulhu and Imp2 soldered together like this
As long as you mean the red and black wires from the brawl pcb USB wires, yes you can. Those unlabelled points are directly connected to the VCC and GND screw terminals.
Yes that’s what I meant the red and black wires from the brawl pad USB. I’m trying to make it as clean as possible so I’ve been soldering the wires on the underside and I don’t want too many cables coming out of the screw terminals.
Thanks a lot for the help Toodles 
Need some help troubleshooting for a MC Cthulhu /Imp/ RJ-45 project coming from a TE Marvel 2 stick.
I tried to follow the guide on page one but i am kinda lost(except for ohms reading) because i have a analog multimeter and i havent owned one for long so im not a huge expert with it. Basically i have everything wired like the picture that one guy showed a few pages back. Sooo this is whats going on
Atm i have a rj-45 jack on my IMP and i want to be able to use Rj-45 cords to plug into what ever system. (ive tested my homemade rj-45 cords on a friends stick and they work no problem. i plugged the cord USB/Rj-45 cord into my PC and it doenst detect anything. Ran a test and to the best of my knowledge it is getting power reading that looks lik 1500 ohm or something but its above the 1k minimum you posted up about. I still cant get a response from the IMP. Ive re soldered everything everywhere to make sure all the connections were solid. Nothing.
Heres the thing though… When i choose to skip the imp and i just plug in a A-B USB cord into the jack on the MC Cthulhu EVERYTHING works. all buttons, guide(13th button), Directions, everything. I even update the MC Cthulhu firmware while i was at it. So basically if i negate the imp i can get a functioning PC/Ps3 stick. If i temp bootleg the 360s d- and d+ wires to that of the USB on the MC Cthulhu i can even get a work around for a 360 only stick…but when i go through the IMP nothing works.
Sum it up
All the wires are connected and soldered properly between the imp v2.1 and the MC Cthulhu G-V row 1, the Rj45 power is soldered to the V on the second line. The D+ and D- are connect to the Data lines on my 360 TE PCB and the VCC is hooked up to the VCC Screw terminal on the MC Cthulhu.
Misc Info.
I had do to solder the wires from the 360 PCB to the MC Cthulhus A-H, and 1-9 slots because when i had them hooked to screw terminals only 1P, 2P , 3p, 4p Worked and one direction -___-.
I hooked up a spare 360 USB cable to the other end of the imp to see if it was just the RJ-45 and no response there either.
Ive done about 4-5 mods with the MC cthulhu including a multi mod PCPS3/360/PS2 mod but none with the use of an IMP.
please help and i can explain in greater detail while i work on more trouble shooting on this stick…
THanks for the help. Sorry if anything is a little hard to understand and i can Clarify anything you need me too.
This is Ryan, Krost’s brother. Created the “2 PCB 1 Stick” thread a long time ago.
So I wired up my friend’s (4r5) TE for a MC/IMP V2 setup. I followed the IMP V2 guide on godlikecontrols.com but it failed to mention the mandatory firmware update for it to work. After digging through some threads, we updated the firmware and voila, everything worked fine. Just an FYI, I would update the guide to mention that.
BTW, the IMP V2 is awesome, good job Toodles! And I am also now reading about the kitty boards… wish I read about that before getting my hands dirty with this project. Here’s the final product (sans a USB cable, was waiting to hear what length he wanted it to be), I haven’t seen too many TEs with the boards mounted on the top rather than the bottom:
http://wikit.home.comcast.net/~wikit/images/TEMCIMPV2.jpg
Keep up the great work Toodles! I can’t even begin to explain how easy/enjoyable you’ve made arcade stick modding for me.
- You can’t be too specific. This isn’t specific. There are lots of pictures in this thread, and at least a link to the post if not the image itself couldn’t hurt.
- Totally doable.
- I have no idea what you tried to test or what the findings were. So you tested resistance somewhere, but theres no information about where you tested, or why.
- So the MC is fine.
- Sounds right.
- Weird, but irrelevant since your moved the wires to the unlabelled points, and they appear to work just fine when using a USB cable. Unlabelled points are perfectly acceptable to use, so dont sweat it. If it works, that part is good.
- I’m assuming you soldered the USB cable to the four points labelled with the colors. If not, please say so.
What you need to get down 100% is how to test things with a multimeter. The three important things are testing voltage, testing resistance, and testing continuity (which, really, is just testing resistance unless your multimeter has a beeping continuity test mode). Read the next link and play with your meter to learn how to measure voltage
How To Use A Multimeter - SparkFun Electronics
Everything on my boards maxes out at 5 volts, so use the setting on your meter just over 5 volts; probably 20 volts.
Now, keep that USB cable soldered to the Imp. Plug in the stick using the USB jack on the MC Cthulhu. Measure the voltage on the VCC screw terminal, and the D and E columns. Unplug the USB cable from the MC Cthulhu jack, and plug in the USB cable soldered to the Imp. Take the same measurements (VCC screw terminal, D column, E column) and post up what you find.
Thanks for your quick response. I will edit this post/ after i troubleshoot today. My iphone 3g has a camera but it might not take the best upclose pics but ill take some for you. i should have a response on everything by 8pm EST.
Again thanks for the help Marcus/Toodles.
P.S. this was the picture from the post i was talking about
the only difference is that my buttons/directions are wired to A-H and 1-9
EDIT:
Thanks for your quick response. I will edit this post/ after i troubleshoot today. My iphone 3g has a camera but it might not take the best upclose pics but ill take some for you. i should have a response on everything by 8pm EST.
Again thanks for the help Marcus/Toodles.
P.S. this was the picture from the post i was talking about
the only difference is that my buttons/directions are wired to A-H and 1-9
EDIT:
Alright i read up on everything. So first let me answer the questions for the answers you needed me to clarify.
1)test was “Step 1A: Disconnect the USB cable from the PC. Test the resistance between the Ground and the VCC point on the Imp. If the resistance is high ( > 1k ohm)” in which it was over the 1k minimum. but that was before i resoldered everything so i will tell you the results of my new findings now.
-
certaintly wierd i have never owned a MC Cthulhu that has done this, and even though it is irrelevant now it scares me that its not working properly even with the screw terminals but im willing to turn a blind eye to it if i can get the mod up and working w/ just useing the unlabelled points
-
Correct. I soldered to the 4 points that are color labeled.
Now onto the results
“Now, keep that USB cable soldered to the Imp. Plug in the stick using the USB jack on the MC Cthulhu. Measure the voltage on the VCC screw terminal, and the D and E columns. Unplug the USB cable from the MC Cthulhu jack, and plug in the USB cable soldered to the Imp. Take the same measurements (VCC screw terminal, D column, E column) and post up what you find.”
2 results one with the USB from MC Cthulhu ill call USBMCC and the second results ill call USBIMP or usb from IMP.
USBMCC
VCC Screw Terminal (remember i have a analog multimeter) = 4.5V
D column row 1(row thats going to the imp) = 0V (no reading)
E column row 1(row thats going to the Imp) = 3ish V(very slightly over)
D column row 2(row the second V from Rj45jack is plugged into) = 0V(no reading)
E column row 2(row the second V from RJ45jack is plugged into) = 0V(no reading)
V column row 2(rj45 power) = 4.5V
USBIMP
VCC Screw Terminal = 4.5v
D Column row1 (row thats going to the imp) = 0V (no reading)
E Column Row1 (row thats going to the imp) = 3ishV (very slightly over)
D Column row 2 (row the second V from rj45 is plugged into) = 0V(no reading)
E column row 2 (row the second V from the RJ45 is plugged into = 3ish V(this reading didnt happen for USBMCC test)
V column row 2(rj-45 power) = 4.5V
Misc shit:
after re doing the soldering the computer reads the stick from the IMP! but only from the usb cord i soldered onto the imps color-coded points
I plugged the same USB from the IMP into my 360 and the leds flash on top of my stick(flashes once and then goes dark permanently) but the 360 doesn’t register it.
it WILL NOT however detect anything from the RJ-45 jack via my RJ-45 to USB cord(the one i tested on my friends stick and it works perfectly with 3 of his nuetrik sticks)
I am using my analog multimeters DCV/15V as thats the lowest it will go.
If you have any questions or you think i did the reading wrong let me know i will redo anything youd like. I feel like im so close to finishing this i can taste it!
Once again thanks alot Marcus! I appreciate it!
@Esjihn You can check out my thread on how I wired up the MC cthulhu to the Imp v2. I’ll have it updated once I’ve finish the picture wiring diagram.
http://shoryuken.com/f177/mc-cthulhu-imp-v2-madcatz-xbox360-rj45-custom-stick-271921/
I appreciate that man, i really do, but everything i have is wired up just like that nothing different at all and i still have problems i even resoldered ever wire and everything. So im waiting on toodles to come back with some trouble shooting tips based on the results of my findings tonight in the previous post.
Did you update the MC Cthulhu before soldering the imp v2 to it? Cause that’ll cause a problem with it not working if the firmware isn’t updated before hooking them up.
…
i didnt update it before i hooked both up, i updated it after. I assumed the software was already up to date since i bought it like a week ago. I only ‘updated’ it really just to do it. I really hope a software glitch isnt whats causing the problem -___-
That’s a bit much to mini quote individually, so I’m just gonna kinda spew this here.
- The test for resistance between VCC and GND is to make sure you dont have any shorts between the two. If you get something over 1k ohms resistance, that’s a good thing. So dont sweat it and fuhgeddaboutit.
-So after your cleanup, the USB cable soldered to the Imp works. That’s a good place to start. You definitely do want to update the firmware to the most recent so you can be certain it’ll communicate properly with the Imp. I’m assuming you already did that; if not, do it now.
- Plug it into a PC with Short, Strong, and Roundhouse held down (1K, 2P, 3K) to force Xbox360 mode. The Xbox360 pcb should show up in the game controller’s applet. If not, then plugging it into an Xbox360 wont tell you anything because the Xbox360 pad isn’t hooked up right. If so, check that the controls work as they should.
- Check the RJ-45 end of the RJ-45 USB cable. Make sure the wires in the clear plug match rtdzign’s guide.
- Plug the RJ-45 USB cable into PC and the RJ-45 jack. Redo those voltage tests of the VCC terminal, D and E columns.
- Verify NONE of the solder jumpers on the bottom of the board are shorted.