Viewer Challenge - iPhone 360 Controller

If the transistor is switched on fully then there should be very little drop across is so I think you can cross that idea off the list.

Sorry I should have explained the images, that is a probe of the pad on the controller. The micro in the controller is switching the line, I guess multiplexing of some sort.

I guess it's wired like:

rather than how we thought like this:

If I get what you're saying then I sounds like it should be working no problem - the only thing I can think of is that the 4066 is distorting the signal enough that the micro doesn't see it as a button push.

Can you point me to the datasheet of the chip you are using?

Off to sleep now but will have a look over the datasheet tomorrow and see if I can suggest anything else

Here's the 74HC4066

http://www.solarbotics.com/assets/datasheets/74hct4066.pdf

Pardon my long wires (for positioning) and crapphy photo, but you can see:

http://silence.sarcasm.com/chip_001.JPG

That's the circuit. Orange black are on the 360 controller end. Yellow is from the output board, it's pulled high, and the red coming from that same board is 5v usb power and it's powering the chips. The yellow goes into an inverter (74HC04), the red jumps down to the 74HC4066 enable line, and the black/orange should complete the circuit. I can click the button I made in my program to toggle that yellow line low, and when that happens I get continuity on the two pins where I have orange/black.

I was thinking of maybe substituting a quad channel opto that has the same basic pinout as the 4066, the datasheet is here:

http://pdf1.alldatasheet.com/datasheet-pdf/view/45325/SIEMENS/ILQ74.html

It's the 4 channel version.

Let me know what you think.

Sorry I haven't had a chance to look this over yet but I will be in the labs tomorrow where there's a selection of IC's so I'll have a look see if I can pick one out and see if I can get it up and running with my pad.

Wow. Thanks!

http://www.youtube.com/watch?v=AQ4NAZPi2js

Heh

Just managed to pick up a MM74HC4066N. Playing around with a sig gen, with the enable line pulled low I still get a 0.76v replica coming out the other side, I'll test it out with my pad when I get back home later.

Keep you posted.

I come bearing good and bad news!

Using the chip I picked up earlier I have got my pad working fine - that's the good news, the bad - I don't know why your's isn't.

Rather than using the usb and inverter have you tested it just tying the enable on the 4066 high and low? I that works then it's a problem with the inverter and usb if not I'm not really sure where to start - the software you are using confirms the pad works when connected with a piece of wire? Do you have another pad to try?

And those are crazy long wires and an interesting colour choice for the wires lol

Hmm. What are you using? Standard Xbox 360 wireless controller?

The wired one, I believe the newer ones are slightly different, mines quite old so will be the earlier one.

ok. i'm out of town from tomorrow until next tuesday, so I'll try again after that. thanks for verifying that i'm not crazy and had the right idea.

are you controlling the line from something? not that it matters, just wondering.