IMPULSE DRIVE on my wrt54gs v1 (usb mod)

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zerx
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Joined: 13 Nov 2009
Posts: 32

PostPosted: Tue Jan 19, 2010 8:37    Post subject: IMPULSE DRIVE on my wrt54gs v1 (usb mod) Reply with quote
wrt-54gs v1 (wrt-54g v2) usb mod memo:

-usb pinout: rh19 usb1_dp, rh20 usb1_dn, rh21 usb2_dp, rh22 usb2_dn
(These four "rh" resistors are connected from ground to usb signal lines)
-according to the usb 1.1 specification 15k ohm should be placed between signal lines and ground.
so the orignal "472" resistors( all four of them) should be replaced with 15k ohm resistors.

-ESD protection diode and 22 ohm series resistors should be used(they are optional, but i have used them anyway)

-wrt54gs v1 (wrt54g v2) supports 5v power, I used a high quality 5v 2a one.



so happy right now

Code:
hub.c: new USB device 00:04.0-1, assigned address 6
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 6
SCSI device sdb: 15663104 512-byte hdwr sectors (8020 MB)
sdb: Write Protect is off
 /dev/scsi/host1/bus0/target0/lun0: p1
hub.c: new USB device 00:04.0-2, assigned address 7
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 7
SCSI device sda: 15663104 512-byte hdwr sectors (8020 MB)
sda: Write Protect is off
 /dev/scsi/host0/bus0/target0/lun0: p1




Code:
root@DD-WRT:~# ls -R /dev/scsi
/dev/scsi:
host0  host1

/dev/scsi/host0:
bus0

/dev/scsi/host0/bus0:
target0

/dev/scsi/host0/bus0/target0:
lun0

/dev/scsi/host0/bus0/target0/lun0:
disc   part1

/dev/scsi/host1:
bus0

/dev/scsi/host1/bus0:
target0

/dev/scsi/host1/bus0/target0:
lun0

/dev/scsi/host1/bus0/target0/lun0:
disc   part1








------------------------
update:

I only have the info for these ICs:
PBGA package: bcm4702, bcm4704, bcm4712,bcm5350, bcm5352
(bga package with green PCB broader)

and bcm5354

see my replies of this post for more info


Last edited by zerx on Fri Dec 31, 2010 8:20; edited 5 times in total
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BigRon
DD-WRT Novice


Joined: 09 Jan 2010
Posts: 43

PostPosted: Fri Jan 22, 2010 13:10    Post subject: Reply with quote
Awesome..

So you got two USB-Ports added to a WRT54GS v1 ?

Is it working flawelessly? And how did you integrate USB Drivers? Through optware?

How much GB can it handle, and will this Mod work with a WRT54GS v1.1 ? I have modded my router with an SD-Card slot, will it go side by side with this USB mod?


THanks in advance.

Ron

_________________
WRT54GS v1.1 with TOMTAO & SD-Card Mod
WNDR3700 with stock Netgear FW-V1.0.4.55
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Fri Jan 22, 2010 15:09    Post subject: Reply with quote
it is running
DD-WRT v24-sp2 (11/02/09) mega - build 13064M VINT Eko

which supports usb by default and should not have any size limit

The layout of WRT54GS v1.1 is different, so the usb pinout I post cannot be applied to your router

However, all bcm4712 have an usb ohci controller integrated inside.

So if you can get the correct pinout of this IC, it is still possible to insert a very thin wire between the PCB and the BGA package to carry out the usb signal.
raidenii
DD-WRT Novice


Joined: 11 Feb 2010
Posts: 3

PostPosted: Fri Feb 12, 2010 0:03    Post subject: Reply with quote
Could you take a pic of your board? Thx
Also what USB board do you use?
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Fri Feb 12, 2010 15:19    Post subject: Reply with quote
well, my router is stuck deep behind the closet right now and it is really hard to get it out....

but i think i have given enough info in my first post.

just ask me question for the part which you do not understand.
Dark-Show
DD-WRT Novice


Joined: 26 Jun 2009
Posts: 45

PostPosted: Sat Feb 13, 2010 13:52    Post subject: Reply with quote
is it possible for this to work on a WRT54G v4
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Sat Feb 13, 2010 15:12    Post subject: Reply with quote
yes...
http://www.5dwifi.cn/viewthread.php?tid=88&extra=&page=1


Last edited by zerx on Mon Apr 12, 2010 16:18; edited 1 time in total
Dark-Show
DD-WRT Novice


Joined: 26 Jun 2009
Posts: 45

PostPosted: Sat Feb 13, 2010 19:36    Post subject: Reply with quote
sorry if that sounded dumb, im a noob to the wrt54g modding scene.
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Sat Feb 13, 2010 21:36    Post subject: Reply with quote
umm.....so what exactly do you want to know??
Dark-Show
DD-WRT Novice


Joined: 26 Jun 2009
Posts: 45

PostPosted: Sun Feb 14, 2010 5:03    Post subject: Reply with quote
just how you would go about adding a single usb port to a wrt54g v4
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Sun Feb 14, 2010 9:39    Post subject: Reply with quote
1. gently scratch off the green coating of bcm5352 as showed above

2.get a usb socket and solder the "dp" and "dn" to the pins you've scratched (didn't show which one is which so just guess, and reverse the connection if your router could not find the usb flash drive )

3.use a 5v/(2a or more) power supply for your router, solder the 5v and ground on the usb socket to the power input of you router

4.connect those resistors as I instruct earlier (optional)
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Mon Feb 15, 2010 15:17    Post subject: Reply with quote
raidenii wrote:
Would you please tell me that what circuit elements do I need? How thick are the wires needed (in gauge)?


-all elements needed are mentioned above
-22awg for 5v and ground, almost no limit for usb lines
plapla
DD-WRT Novice


Joined: 19 Feb 2010
Posts: 3

PostPosted: Fri Feb 19, 2010 19:17    Post subject: THANKS!!! Reply with quote
zerx, you must be chinese in order to registrate and get those pics in that forum. I managed to get them and must say its quite incredible after a long waiting.
I wanted to know if there is another resistor to pull up/down in order to activate both USB ports called "USB_CNTRL" or the only thing i need is to solder a USB socket, install necessary modules and that´s all.
Well thanks in advance and let me know if you have BCM5352 KFB the smaller one or BCM5354 USB pinouts. Greetings
zerx
DD-WRT Novice


Joined: 13 Nov 2009
Posts: 32

PostPosted: Fri Feb 19, 2010 19:58    Post subject: Reply with quote
well, usb_ctrl resistor is NOT needed for my 54gs and have not seen anyone mention it in those Chinese forum as well.

for bcm5352: see the replies
for bcm5354: same idea, just require longer time to scratch
http://www.right.com.cn/forum/viewthread.php?tid=33181&extra=page%3D2

http://www.right.com.cn/forum/viewthread.php?tid=33587&extra=page%3D1




Last edited by zerx on Mon Apr 12, 2010 16:18; edited 1 time in total
plapla
DD-WRT Novice


Joined: 19 Feb 2010
Posts: 3

PostPosted: Fri Feb 19, 2010 20:27    Post subject: Reply with quote
Zerx, thanksfor the pics, and I mean BCM5352 which package it the same as BCM5354, a smaller BGA (20x20 pins) that has no green borders, like the one present in WRT54G V6.
Thanks in advance!!!!
You are the man
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