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USB - Which SMT components/locations support the current port? (modified 0 times) Kudzu Profile I just harvested the USB port from a friend's iopener, in exchange for a cooling fan. Now I want to harvest the SMT packs used for that port to support the second port on my iopener. I can't use parts from the parallel port, they're necessary for the network he's running, so does anyone have the specific locations for the SMT packs I'd have to borrow? Thanks. Kudzu 01-07-2001 19:00:04

RE:USB - Which SMT components/locations support the current port? (modified 0 times) dr_steve Profile Hey Kudzu, there was a thread I was just reading that covered this! Check it out: http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=verytech&Post=27&Idle=0&Sort=0&Order=Descend&Page=0 It covers the caps (6) and resistors (four 0-ohmers) that you'll need as well as how flexible the parts are. Is anyone out there interested in a group purchase of the parts? 01-07-2001 21:15:06

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile Actually some of the part values are wrong on Roastbeef's page and he did not use the silk screen names for the components. I have removed and measured all the components for the first USB. After using the correct values my second USB now works perfectly. Here are the missing components, their correct value and or substitute, and the corresponding component for the first USB port. Parts are listed in left to right top to bottom order for the missing components (ie USB2). USB1 USB2 Component ==================================== RV1. RV2..0.75A Polyswitch Digikey MINISMD075CT-ND $0.65 CT44 CT45 Cap 10uf size 1206 Digikey PCC1894CT-ND(?) $0.80 (please verify number) R263 R273 (overcurrent detect, not necessary) R264 R274 (overcurrent detect, not necessary) L30. L31. Ferrite Bead (use size 603 0 ohm resistor) CT46 CT47 Cap 10uf size 1206 C250 C252 Cap 47pf size 603 C251 C253 Cap 47pf size 603 C258 C259 Cap 47pf size 603 CB85 CB86 Cap 0.1uf size 603 L34. L36. Ferrite Bead (use size 603 0 ohm resistor) L35. L37. Ferrite Bead (use size 603 0 ohm resistor) If you just want to take the USB1 parts from another iopener and move them to a second iopener to give you two USB ports then just move the first column parts to the locations in the second column. The big problem with Roastbeef's documenation was using 0.1uf caps for C252 and C253. With those large values the port was detected but I could not get anything to run. Once I found and installed 47pf values it came right up. I have tested CD ROM drives, mice, ethernet, Smartmedia readers in port 2 and they all work ok now. I do appreciate and recognize Roastbeef's ground breaking effort in coming up with the orginal data and showing us it was possible to do in the first place. 01-07-2001 23:08:01

RE:USB - Which SMT components/locations support the current port? (modified 0 times) mp3boombox Profile | Email I would be very intrested in a GROUP buy for the parts to make a second USB working. This would make my life so much easyer. Then i could put my USB dlink ethernet internal to my IO and have a USB port free for any thing else i need. a Group buy for one of these would be exelent 01-08-2001 04:31:05

RE:USB - Which SMT components/locations support the current port? (modified 0 times) mp3boombox Profile | Email This would also be a power saver, I'd rather run 2 devices via 2 ports then 2+ devices off one port thew a HUB. When the HUB takes power to run also, there for if need more then 2 ports i could use a self powerd HUB. 01-08-2001 04:41:17

RE:USB - Which SMT components/locations support the current port? (modified 0 times) bu11et Profile Mouser Electronics http://www.mouser.com does not have a minimum order for the US. I quickly put this list together, and I couldn't find the 10uF caps in the catalog. They should have them, though. One question: If I use the USB receptacle and external USB devices, can I still use 0 ohm resistors instead of the ferrite beads? In another thread, it was said the ferrite beads weren't necessary since everything was mounted internally, but I'm not sure if they meant just the USB port components or their entire USB device was mounted internally. 538-87531-0018 (1) USB receptacle $0.88 Series A, single 4-position thru-hole, black (pg140) 650-MINISMD075 (1) 0.75A Polyswitch $0.63 Raychem (online product index) 140-CC504N470J (3) 47pF cap $0.096 each size 603 (pg245) 77-VJ06U25V104M (1) .1uF cap $0.11 size 603, Z5U, 20% Tol. (pg245) X7R, 10% Tol. also available 301-0 (3) 0 ohm resister $0.11 each size 603, 5% thick film, 1/16W, 50V(pg191) ???????????? (2) 10uF cap size 1206 ** I couldn't find these in the catalog, they should have them though, just need to call them 01-09-2001 10:18:01

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile Can 120 ohm ferrite beads be used for L31/36/37 rather than the 0 ohm resistors? I can get the beads easier than the resistors. I'm thinking about putting together a group buy, total costs will be around $6 and a SASE for return shipping. B'Dog 01-10-2001 09:33:10

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile Turbo3, I'll ask again if 120 ohm ferrites will work in place of the 0 ohm resistors? I'm getting in the last of the parts for the group buy, and want to know the best parts to provide. TIA if you can help.... B'Dog 01-16-2001 08:59:46

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Programmer Profile I would REALLY doubt it.. I haven't looked at the design or anything, but you are talking about replacing a zero resistance part with a 120 Ohm resistance part. 120 Ohms isn't a lot but it's WAY more than 0... 01-16-2001 09:15:19

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Linuxguru Profile | Email For a ferrite bead, 120 ohms is not the resistance (which should be 1 ohm or less) but the impedance at some standard frequency (say 1 MHz). I think it should be OK, but check the DC resistance to be sure. 01-16-2001 10:50:02

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile DigiKey part number P10188CT-ND size 603 Bead Core should work just fine. It has an impedance of 220 ohms at 100MHz and a DC resistance of 0.5 ohms. 01-16-2001 11:27:33

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile Actually L31 handles the USB +5v so it must be able to handle +500MA. So perhaps you better use P10749CT-ND (1 Amp rating) or P10750CT-ND (500MA). However, the poly fuse is set at 750MA so the 1 Amp one is safer. 01-16-2001 11:52:20

RE:USB - Which SMT components/locations support the current port? (modified 0 times) 02U2 Profile Hmmm, Looks like some old P-II motherboards I have collecting dust, have the nessessary parts on them(Except the right type of usb socket)to complete the 2nd usb port add on......To include the ferrite beads. If you have any old motherboards around may want to check them?? 01-16-2001 19:41:09

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile Turbo/Programmer/LinuxGuru, Thanks for the valuable inputs. I need to look up the specs on the bead I have, you're right about impedance vs resistance. Should have remembered that from somewhere waaay back in my education. Either way, I think I'll ship both parts with the kits and let folks do what they wish. As far as the PolyFuse, I've already got the 750ma in transit. I'll see if I can find some 1amp here locally and add them in with the kits also. Dang, getting a little pricier than I had figured but want to make sure the kits are good to go when folks get 'em. Should start shipping next week after the PolyFuse gets here. If anyone else wants to order, send $15 ($17-18 if you feel bad about my extra costs, hehehe) via PayPal to BubbaDog56@ev1.net. I've got enough parts in the first order for about 25 kits, and about 15 are already pre-paid. Thanks again to everyone for their inputs, glad to be able to provide the kitting resources for the group.... B'Dog 01-17-2001 07:32:10

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile As pointed out by Turbo3, et al, the ferrites are 120 ohm impedance, actual resistance per specs is .2 ohm. Either way, I'll provide both the ferrite and the 0 ohm resistors in the kits. Can't find the 1a Polyfuse locally, and the .75a are already en route. Since the iO has the .75a in the existing location it should work fine. On another note, the connector spec'd by bu11et earlier in the thread is the wrong style. The part called out in his post is a right angle horizontal, not upright vertical. So guess which one I ordered? Doh! The only source I've found for the vertical is from the original thread at $4 a pop, which turns this into a loss at $15 a kit. If your're going to hardwire in a USB device internally, just throw away the right angle connector in the kit and wire your device into the connector holes in the board. If you want to wire the connector up for external devices, it can easily be modified to stand upright in the proper location. It will involve straightening the pins out of the back of the connector instead of out of the bottom, and clipping the shield-to-board mounting tabs off of the connector shield. A small piece of electrical tape can be placed over the general location of the connector on the board to prevent the edges of the shield from possibly shorting the board traces underneath. The shield can then be soldered to the existing pads/hole for the mounting tabs on the board for physical support. I'll probably include 2 connectors in the kit, one already pre-modified to save you the hassle. Hopefully I can borrow a digicam to snap some pix of the connector install and post them up on Yahoo or someplace. The other option is you buy your own upright style connector for 4 smackers, sorry.... Kits should ship next week as soon as the Polyfuses get here, so sit tight. The parts will be all presented with clearly marked values and locations, and I've included some links on soldering hints for small SMT parts. If you still want to order one, send PayPal for $15 to bubbadog56@ev1.net and you'll be added to the list. B'Dog 01-19-2001 11:10:57

RE:USB - Which SMT components/locations support the current port? (modified 0 times) bu11et Profile double check that they sent you the right USB receptacles. According the catalog, they don't offer a Molex right-angle receptacle. Make sure they didn't send 571-7876161. The description by the part # I posted says nothing about being right-angle. It's on page 140 if you want to check out the online catalog on their website. bu11et 01-19-2001 17:04:52

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile Bu11et, The only connectors they carry are the right angle style. Both the Molex and AMP parts are right angle, meaning the pins come out at a 45 degree angle to the connector. The illustrations on catalog page 140 http://www.mouser.com/catalog/cat_604/140.pdf show this style only, in either a single or double stack version. You can also tell by the way that the physical mounting tabs protrude. This right angle is the style used by 99%+ of motherboard manufacturers, which is why the uprights are both hard to find and expensive. I didn't get them from Mouser, I just used the description and illustration as a guide to get them locally with a better leadtime. If it wasn't for the stinking Polyfuses not being available locally, we'd all be installing these kits already. Also, the plastic connector molding is beige instead of black (double doh!), but a black permanent marker will correct any asthetic issues for those sensitive to such things. Regardless, the right angles are usable with a little mod. And that's part of the challenge and joy of hacking this thing anyway, eh? If it was easy, any dweeb would have one.... I have another 25 Polyfuses coming in a second order that should arrive by end of week, and all other parts in hand. Still taking orders for the second batch of kits, PayPal $15 (additional kits at $10) to bubbadog56@ev1.net. B'Dog 01-20-2001 08:42:37

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile A nice change to make while you are installing the USB connector is to hookup the "phone" LED as an HDA activity LED. Since you have to totally remove the motherboard from the LCD panel to install the USB connector you have easy access to the back of the board. This makes for a clean change to get the HDA activity LED by making only one "cut" on the component side, moving one resistor from component side to back LED side, and adding two wires. This way you use the original green LED. 1. Make a small cut in the left land coming from LED3. The right land goes to R8. This will disconnect LED3 from any other part. 2. Remove R8 and move it to the back side soldering one side to the LED3 pin closest to the IDE connector which is the one with the cut made on the other side. The resistor is held in place by this one solder joint with the resistor pointing down. 3. Connect a wire from the resistor to IDE pin 42 which is +5. Second pin from right on top row. 4. Connect a wire from LED3 left pin to IDE pin 39 which is the HDA activity signal. Third pin from right on bottom row. 01-20-2001 10:12:52

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile One more thing. You should install the surface mount components for the second USB BEFORE you install the USB connector. Otherwise the USB connector gets in the way of soldering the small parts. 01-20-2001 10:17:29

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Programmer Profile I ordered a sample of usb connectors a while back.. they don't actually look like the IO USB port, but they fit and work fine, if you're interested, I'll post the details when I get home.. 01-22-2001 08:37:59

RE:USB - Which SMT components/locations support the current port? (modified 0 times) BubbaDog56 Profile Programmer, Any info would be appreciated, especially manufacturer and part number. I'm still waiting on the !#* Polyfuses from Mouser, so I'd like to try to get a better connector. B'Dog 01-22-2001 20:45:44

RE:USB - Which SMT components/locations support the current port? (modified 0 times) Turbo3 Profile The USB connector I use is from: http://www.newnex.com/listfor2.htm Part number URA-1003. Not exactly the same as the stock one but it fits and is the same style (upright) so you don't need to bend the pins. Prices and ordering info is here: http://www.ntcdistributing.com/ntc1.htm Eleven or more is $2.75 each. 01-22-2001 21:16:54

RE:USB - Which SMT components/locations support the current port? (modified 0 times) mkanar Profile Are these parts presently available in a kit? Thanks! 04-13-2002 19:21:00

RE:USB - Which SMT components/locations support the current port? (modified 0 times) *SF* Profile BadFlash.com was the last place to have Kits. I would send Jack email & ask if he still has any. 04-13-2002 22:19:53

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