How did you work out which is pin 6? Was it marked etc?
No markings on mine, I just started numbering them as I noted them down (left to right), however i didn't follow standard pin mapping, and think i have noted them in reverse order
The following should be standard numbering. (if Samsung release a spec or diagram of the plug :P )
Here are the images as promised.
Smart dock pins:
Pin 1 - Vcc
Pin 2 - USB - (Slave)
Pin 3 - USB + (Slave)
Pin 4 - ID/Sense (40.2K Ohm)
Pin 5 - Gnd
Pin 6 - ? (Audio/USB host?)
Pin 7 - ? (Audio/USB host?)
Pin 8 - DP (MHL +)
Pin 9 - DN (MHL -)
Pin 10 - MHL ID (connected to ID Pin of MHL Adapter)
Pin 11 - Gnd
---------- Post added 6th February 2013 at 12:37 AM ---------- Previous post was 5th February 2013 at 11:42 PM ----------
After watching a review of the smart dock, in which the S3 is said that USB doesn't work in dock mode, and along with the Note 2 working with PC Docking. I can only assume that the data has to be on the pins 6 & 7.
The next step is identifying the polarity of them, luckily D+ & D- both can take 3.3v (used as ID for USB 1.0 or 1.1) nothing should be damaged if the polarity is incorrect.
The next issue is connecting all of the wires to the USB pins at once. I can't connect all of the wires to the 0.3mm pins, and expect them to not come loose or short. The only solution that i can think of is to etch a breakout PCB for it. Hopefully it will arrive soon, Unfortunately my first board was way too thick for the plug.
Normally when i need to connect to small pins like these, I use Kynar wire, as it is so small and single core. However when usb host didnt work, i assumed that it was because the cable had to much noise, so i changed to normal USB cable (which also didn't work)
The socket is interesting, it looks like they surface mount it, unlike the plug that i have, which mounts on the side of the circuit.
Have you seen anybody selling the plugs cheap, and in low quantities? the only place i can find is alibaba, and i have to buy a few hundred
Excuse the rough edges, I through together a breakout board for the plug, so that i can easily access all of the pins, and secure the cable in place.
I made a quick sketch on a PCB and etched it. Not quite figured out how to print them yet.
---------- Post added 7th February 2013 at 12:36 AM ---------- Previous post was 6th February 2013 at 11:53 PM ----------
I just powered it up, and gave pins 6 & 7 a try with a memory stick connected, unfortunately there was no response from android, it also didn't see a mouse.
not sure why it doesn't detect, maybe there is too much interference, or the pins just aren't usb.
anyway, i will dig out my osciloscope, and start testing the pins to see what data they are trying to send.
I may end up having to purchase the smart dock to see what makes it tick.
Thats the exact same reason that I have been trying to make one.
I have the lapdock ready and waiting to be modified. If you need any info on the lapdock's USB and HDMI connections, have a quick look at "RaspberryPi Lapdock"
I hope that you get your smartdock soon. Im Looking forward to your input.
Doesn't USB OTG need a pin shorted to ground? or 100 ohms etc.
USB OTG uses a short between pin 4 & 5. The resistance between these pins "informs" the phone about which accessory is connected.
USB OTG mode, will only activate the USB host function, charge and HDMI are disabled in this mode.
Desk Dock mode, enables HDMI, and Charge, but not USB OTG
Smart Dock mode, enables HDMI, charge, and USB OTG.
Here is a list of (Samsung Galaxy S) resistor values I saved on my computer, I believe I found them on this forum, by "TheBeano"
(list is edited to show more relevant items to the Note 2)
Android uses multipletypes of notifications. One of these isknown as a toast notification. … more
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