This is how I did it.
I removed the plug off the camera and soldered it to the hub (after removing the female USB input on the hub and the plastic case) the USB hub can now be easily unplugged.
I have removed the 4 male USB plugs as they are unnecessary and just take up space.
To one of the USB output I have wired a male micro USB cable as the 3G dongle I am using has a female micro USB port for connection.
The original camera is soldered to the hub ( not working at the moment but hopefully I can get it working but if not its no great loss as my phone can take bad pictures and record poor quality video much better than the Vega and I can see the screen as I am taking a photo.
All cables were carefully shielded and I have used hot glue to insulate the hub.
I then removed the plastic case of my Huawei E220 (a big modem but its thin so it fits snugly).
The sim card is held in place by the plastic case that I removed, a piece of insulation tape now holds it in place.
I insulated the parts of the modem that needed doing and removed the plastic holder that holds the antenna, I soldered the antenna to the modem so I could bend it a little (the plastic holder made the modem a little too big, the case did close up but had a slight bulge on the back.
I also had to remove the unused mountings off the Vega’s metal rear panel, to do this I removed the metal panel and knocked them out with a screwdriver a 7mm socket and a hammer. Without removing these the modem won’t fit as well (bulgy back).
I also cut part of the back panel (inside) so the modem and hub would fit correctly (Very easy to do with a Stanley blade (box cutter blade).
With all these mods the modem and hub fit snugly inside the case where I have put them but there is loads more room in the case for more goodies to follow.
Modem works perfectly with strong reception and i have full bars all over the house and 2 bars in the cellar where my phone cant get a signal.
No need to hold back button when booting as all four internal USB’s are in host mode.
At the moment the 2 spare USB’s are unused. I will use them at a later date to add a micro SD card reader (and card) and a GPS dongle.
USB hub, Huawei E220 3G Dongle and camera wire ready to be fitted
Standard modem antenna with plastic holder
Modified modem antenna fitted to modem
Plastic that had to been cut off the rear panel to make room for the Hub and modem (outlined in red where it was)
All images Uploaded with ImageShack.us
Credit to rose840 and windin101 for blazing the internal USB hub trail and figuring out the pin-out of the camera port.
Now to try to get the camera working.
I have decided that the cabling is too big and the micro USB port on the modem needs to be removed. The case closes correctly but the clearance at the micro USB port is zero so if I push the back of the case the screen screen distorts (like touching a laptop LCD). This is not damaging the display and it dosent happen during normal use but it's making a weekspot where a knock on the back could damage the display. Removal of the micro USB and soldering the wires to the modem will solve the problem. I will probably re-route the wire for the modem as I don't like it running across the board for the same reason as the USB port. I am waiting for a GPS dongle and a keyring micro SD card reader off eBay. I will update as soon as I have these.
If you find this post useful please Rep me, ta. >>>
It has been a while since I started this, and it need’s some updating as I have tested loads of hubs and have now finished and I am happy with it.
This is what I am currently running.
I have a Mini USB hub from the camera port on the motherboard. Wired to this is
1: A Huawei E220 3G modem (minus the case).
2: USB SD card reader with a 32 gig card.
3: The original Vega camera.
I have tried so many hubs (well about 5 different models and individual hubs). I have ordered Then off different people on eBay They all look the same from the outside (the case) but each time I get a slightly different board/IC so don’t be surprised if you cant find one that looks identical to mine. The important thing seems to be the capacitor on the board, if it doesn’t have one it won’t work. All the hubs have markings to tell you what the inputs are so wiring is a doddle. If you’re going to do this make sure its all working before using hot glue to insulate the hub. Trying to remove hot glue from a circuit board in not fun.
Here are some pictures of the hub I used and some hub I messed about with.
This I the hub I am using now the capacitor is on the back.
The back of the hub (note the capacitor).
This one was very slim (no capacitor) but didn’t work.
Left to right; worked, didn’t work, worked, worked until I moved the capacitor.
This hub didn’t work but it shows clean wiring and how to wire the camera (the extra yellow wire bypass’s the hub)
The E220 3G modem is actually a really good fit after the case is removed. I didn’t need to remove the mini USB port as I thought I need too. The clearance is now ok after I bought a mini USB male connector from Maplins and used insulation tape instead of the supplied plastic shield. I have also now fitted an external antenna for the modem. The other standard antenna worked fine but this one was £1.50 of eBay so why the hell not! Signals great. Note the heat shield on the back cut for reception. I used a tiny blob of hot glue to hold the modem in place but the power cable and LCD cable hold it in place well. In its current location there was no need to remove the screw lug off the metal frame so no pliers needed now (look I have a new metal frame )
The modem works flawlessly in corvus5 and Vegacomb. Will work in ICS as soon as support for 3G modems is added (it’s so close I can taste it).
The USB card reader
This is just a tiny USB card reader off eBay. It’s wired using the male plug from the hub minus the plastic insulation.
I tried one reader with a full size SD card slot on one side and a micro on another side. My idea was that I could fit a large (32gb) card internally and cut a slit in the side of the frame for the full size SD card. 2 for 1 so to speak. Individually the slots worked fine but with 2 cards connected at the same time the SD card keeps un-mounting itself so was useless. The singe micro SD card reader works fine. And the card is accessible from the outside (after cutting a slot) and sits flush with the frame.
I have not benchmarked the I/O speed but the speed is fine. I am able to explore and move files on and off the card from the Vega but the extra SD card is not visible on a PC when connected by USB so I cant copy files directly to the card from a pc without removing the card. No biggy as I can easily remove the card.
I have cut a slot in the frame for the SD card. I did it for full size card first but that didn’t work out so now I have a bigger slot than I need but that’s fine, it looks OK. I have a couple of spare frames from Vega’s I have broken for spares so I will do a better job when I get around to it.
In ICS I use ES file explorer for moving and exploring files. In ES file explorer go to settings and tick “up to root” and “root explorer” to get full access to everything. This works for USB sticks on the main USB too, as long as you’re in host mode.
SD card slot, It s a bit big and messy close up, but it’s not too bad. I can do better.
The camera works as it should. The Extra (yellow) wire supplies extra power to the camera. Four wires to the hub, the yellow wire straight to the camera. Simple!
I now know the model number of the 2mp optional camera it is a Chicony CNFA210. I cant Find one though. Maybe someone else may have some luck finding it.
I fitted a blue tooth GPS receiver but I decided to remove it as it was very cramped inside and the receiver didn’t work brilliantly because if the LCD and the metal frame and the direction the receiver is pointing. It worked OK if I held the tablet right.
The GPS is powered from the Hub to the battery plug on the GPS using the plug off the battery. I also fitted a breaker switch so I could power off the GPS so it wasn’t powered on all the time wasting power.
Here is a pic’s of the GPS before I removed it. The switch is on the left with the red and white wires.
Wooshy has devised a better mod using a hub and a skinny USB GPS that is much tidier and because the stick is smaller it can be put near where I have put the SD reader so face’s the right way and gets a much more reliable signal. It also require less power to use because Bluetooth is not required.
Here is his thread http://android.modac...81#entry1923781
Idea’s for things you could also do with the Hub.
Bluetooth 2.0 EDR mini dongle. This sort of thing.
This would free up the internal antenna for the sole use of the wifi making simultaneous use of Wi-Fi and Bluetooth more reliable. This would probably need tweaks to the rom but Linux supports these dongles so it wouldn’t be too difficult.
802.1N Wifi dongle
This sort of thing.
I am not sure if linux support these (it probably does). Would probably require lots of work on the rom to make it work but I am sure its possible (if linux drivers are available) . This mod would double wifi speed and free up the internal antenna for sole use by the Bluetooth.
Wireless game controller
Again, it would probably require work to the rom to make work but completely possible. A wired Xbox 360 controller is less hassle though and should work out of the box with the right rom.
Rear facing camera.
You can get some very small high res webcams that could be mounted on the inside of the rear panel giving you a rear facing camera. It would require mods to the rom or maybe a custom app to work but again completely do-able.
Other possibilities: HSUPA dongle or 4G when they are available. Mice. Keyboards, USB to mini PCI express card (opening up a whole new list of mini PCI express cards including the E770w 3G/gps modem fitted to some P10AN01’s (Viewsonic 10s 3G for example). W.H.Y.?????
E220 modem £15
SD card reader £2
The antenna £2
Mini USB male plug £4
Total cost £26
You will also need a soldering iron, solder, insulation tape, a hot glue stick, some wire (there’s plenty on the hub you get) and a sharp craft knife for cutting the case.
Take it easy,
Edited by richardmlea, 26 March 2012 - 10:10 AM.