PCB Design - Implement USB 2.0 Hub on PCB

We make OEM products that are controlled via a computer using a USB cable. There are actually 4 USB devices (a USB memory, a USB to RS232 converter, plus 2 other USB devices) and a USB 2.0 Hub inside our product. We place a hub inside the product so we only need to make one USB connection between our product and the computer.

We recently designed a new PCB to use inside the product. All of the functions of the PCB are working EXCEPT for the USB hub. We've been able to check that much by removing the USB hub chip from the PCB and making connections to the other devices by soldering connections to an off-the-shelf USB 2.0 hub that we purchase in a local store.

We´ve had several PCBs made and they all fail in this way. Both our engineer and the PCB supplier have checked the PCBs and they seem to meet the specification for the PCB, so we're currently unsure as to why the hub is failing. Our PCB design which includes a USB2.0 Hub chip on it - its a SMSC USB251x chip (see datasheet which we´ve uploaded).

We need someone to fix the problem as quickly as possible. We'd like a freelancer who has made PCBs using USB 2.0 hubs to review the design and/or implement changes to it (possibly switching over the design to use a USB Hub which they've used before). We´d suggest that the freelancer gets the PCBs made and populated (either using our supplier or their own), tests them and confirms they are working. We'll need a working PCB plus the Gerber files etc etc so that we can get further PCBs made according to our requirements.

The PCB was designed in DesignSpark PCB, a free download from [url removed, login to view] We'll prvide full details about the current design.

Skills: Electrical Engineering, Electronics, PCB Layout

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About the Employer:
( 13 reviews ) Gavà, Spain

Project ID: #5063173

12 freelancers are bidding on average $695 for this job


Hi, I think I will need 5-10 days for debugging. I have an oscilloscope and other equipment needed for debugging. I have an experience with hardware development (I have successfully developed USB2.0 sportbike inter More

$555 USD in 10 days
(15 Reviews)

Hola puedo ayudarlo en lo que necesita trabajo con Altium A13 le puedo trasladar sus diseños anteriores . Le envio proyecto completo SCH PCB gerber y modelo en 3D puede ver ejemplos de mi trabajo en el portafolio. Sa More

$526 USD in 7 days
(23 Reviews)

Hello i have many experience in PCB design, hardware design, so i can help you do this thanks&best regard

$755 USD in 20 days
(23 Reviews)

Hello, I have been associated with Electronic design, PCB design and manufacturing for over 7 years. I have used various CAD/EDA tools for PCB design. Also I'm having good contacts in PCB Manufacturin More

$700 USD in 10 days
(23 Reviews)

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

$526 USD in 3 days
(15 Reviews)

Dear I am offering you professional help on you'r project. can you please send me PDF of schematic so i can check it, and probably i can tell you what is the problem with you'r PCB. Kind Regards Nemanja

$631 USD in 7 days
(11 Reviews)

I have extensive experience with USB circuit design including a few different hub IC's... although not the IC you are using. My USB circuits always work - I am a USB expert. I've been designing USB circuits since 199 More

$250 USD in 3 days
(1 Review)

A proposal has not yet been provided

$1000 USD in 10 days
(3 Reviews)

Hello, I am electronic engineer. I have experience designing PCB with Altium and Eagle. If you desire I can send you a previous work accomplished by me. If you send me a message I answer you the Monday, excuse me by th More

$555 USD in 18 days
(2 Reviews)

I have thirty total years of experience and several USB2.0 hubs under my belt. I don't know what the issue is , but it can't be too difficult to solve. The SMSC USB2517 is a popular hub for this sort of application. More

$777 USD in 3 days
(1 Review)

Buenos días, Soy doctor en Ingeniería Electrónica por la Universidad de Navarra, con más de 10 años de experiencia en diseño de PCBs. Uno de mis trabajos recientes se trató de diseñar una PCB con un hub embebido More

$2333 USD in 10 days
(0 Reviews)

Hi, I am a 50year old Electronic Engineer with many years experience of leading-edge Digital PCB design. I am _not_ a Student, recent Grad or Hobbyist - unlike a lot of the people who will probably respond to your req More

$1666 USD in 7 days
(0 Reviews)

I can help evaluate your design, and make revisions. Will you please send me your USB 2.0 Hub PCB and schematic for my review?

$600 USD in 7 days
(0 Reviews)

Hi! Please provide further details of the project and describe more precisely. I can start imediately. Kind regards, Zoltan

$600 USD in 7 days
(0 Reviews)

Dear, Colleague! I am electronics design engineer from Latvia(European union, Baltic sea region) with more than 10 years experience in the field of electronics design. I recently done one project with USB2513B. It wo More

$722 USD in 15 days
(0 Reviews)