Looking for a USB Hub (7 port) with only pin headers - Page 1
Forum section: electronics / projects

author: Stealthrt
author_rank: Regular Contributor
timestamp: September 05, 2014, 05:21:08 am
content: Hey all I'm in a search for a 7 port USB hub that only contains headers so that I can more easily integrate it with my PCB I am designing.I did find this:NZXT INTERNAL USB EXPANSION MODULE IU01The reason why I can not use this module is (1) It has 2 USB sockets already soldered (no headers) and it only supports 4 USB ports and not 7 like I am in need of.And then this is pretty much what I am looking for here:UUGEAR 7-PORT USB HUBEach of those pins represent 1-7 USB ports + upstream port. Problem being is that its $29 each and I would need at least 10 of them for my project! So needless to say, its over budget to get that.If anyone has any info on anything that fits the module above then please post it so I can check it out and see if it can work with my project!Thanks!

author: Smokey
author_rank: Super Contributor
timestamp: September 05, 2014, 05:44:21 am
content: 30 bucks seems like a great deal for something off the shelf like that.

author: Monkeh
author_rank: Super Contributor
timestamp: September 05, 2014, 12:03:46 pm
content: Quote from: Stealthrt on September 05, 2014, 05:21:08 amUh, those have8ports, not 4.

author: Codemonkey
author_rank: Regular Contributor
timestamp: September 05, 2014, 12:30:24 pm
content: Just stick one of these on your board and do it yourselfhttp://www.ti.com/product/tusb2077aI've used them without issue for what its worth.

author: 8086
author_rank: Super Contributor
timestamp: September 05, 2014, 12:33:46 pm
content: Why not just use a usb hub IC? Incorporate it into your design, simples.

author: timb
author_rank: Super Contributor
timestamp: September 05, 2014, 12:34:52 pm
content: Quote from: Codemonkey on September 05, 2014, 12:30:24 pmIf he only needs USB FullSpeed support those would just fine. Just be aware they don't support USB 2.0 HighSpeed.Sent from my Smartphone

author: Stealthrt
author_rank: Regular Contributor
timestamp: September 05, 2014, 02:37:01 pm
content: I would love to be able to make my own PCB USB hub but i dont have the ability to solder SMD components nor have a schematic that I understand in order to build the HUB.I can buy a cheap powered USB hub for $5 but creating one would cost me $10+. I have a budget and looking to make 10 of these for under $100.@Monkeh: You are correct, its 8 ports. But its more expensive than that of the second hub i posted a picture of so that's still a no-go.

author: timb
author_rank: Super Contributor
timestamp: September 05, 2014, 03:18:25 pm
content: Soldering SMD components is easy! You should really give it a go. That TI USB chip has a full application circuit in the data sheet.In fact, I've actually got that chip incorporated into one of my designs already, so I'd be willing to put the layout on its own board, add the ports and pin headers for you, then give you the Gerbers if you wanted to have the boards made.Sent from my Smartphone

author: Stealthrt
author_rank: Regular Contributor
timestamp: September 06, 2014, 02:13:42 am
content: Quote from: timb on September 05, 2014, 03:18:25 pmEnlighten me on the differences of what USB FullSpeed & HighSpeed are? My guess would be that FullSpeed is USB 1.0 while Highspeed is 2.0? I'm hooking up RFID card readers (HID OMNIKEY) to it so i don't think they would work very well in a 1.0 spec.

author: timb
author_rank: Super Contributor
timestamp: September 06, 2014, 02:43:37 am
content: USB 1.x, 2 and 3 have four modes: Low, Full, Hi-Speed and SuperSpeed.Low and Full Speed were part of the original USB 1.x specification and run at 1.5 and 12Mbit/s respectively.Hi-Speed is part of USB2 and runs at a maximum of 480Mbit/s, but can also support Low and Full Speed devices at their respective speeds. This uses the same connector and electrical interface as USB1.x devices.SuperSpeed is the new USB3 and runs up to 4Gbit/s; there’s a new electrical interface and connectors, certain types of which are physically and electrically backwards compatible with USB2 and 1.x specifications.So, you can have a device that’s electrically compatible with say, USB 2, but will only operate in Full Speed mode. (That’s the case of the TI chip.)To put it simply, that hub chip will enumerate as a USB 2.0 Hub that only supports Low and Full (1.5 and 12Mbit/s) data rates. Any USB 2.0 devices plugged into it will back themselves down to that speed automatically.I can’t imagine an RFID reader would need anymore than 12Mbit/s?

author: Stealthrt
author_rank: Regular Contributor
timestamp: September 06, 2014, 02:55:58 am
content: Quote from: timb on September 06, 2014, 02:43:37 amYou forgot about Wireless USBi'm going to send you a PM.

author: Rasz
author_rank: Super Contributor
timestamp: September 06, 2014, 03:01:45 am
content: Quote from: Stealthrt on September 06, 2014, 02:13:42 amrfid readers are a rare case of something that will work fine on 1.1It looks like you are way over your head with the whole design. Start from the top by giving us model number of those readers.Btw whats wrong with using soldering iron and just removing usb sockets from retail USB hubs?

author: Stealthrt
author_rank: Regular Contributor
timestamp: September 06, 2014, 03:03:38 am
content: Quote from: Rasz on September 06, 2014, 03:01:45 amI dont have that kind of time, Rasz.HID OMNIKEY 5321 v2 is the rfid usb reader.

author: Rasz
author_rank: Super Contributor
timestamp: September 06, 2014, 04:22:06 am
content: Quote from: Stealthrt on September 06, 2014, 03:03:38 am$30 a pop sounds fine thenQuote from: Stealthrt on September 06, 2014, 03:03:38 amworks fine on usb 1.1