Comments on: USB Isolator Most Frequently Asked Question

By: oleg

oleg — Fri, 25 Jun 2010 21:59:43 +0000

Have you tried grounding PIN pin as in the article (to do this, you will need a pullup on it)?

By: Ray

Ray — Thu, 24 Jun 2010 14:54:11 +0000

I am not using 1meg pullups or any pullups, just connecting them directly.

The circuit works on one PC, but on others there is the not recognized problem.

By: Ray

Ray — Thu, 24 Jun 2010 11:20:35 +0000

Hi,

I made my own circuit using this device, but it works fine on some PC’s, but on other PC’s it says, “USB device not recognized”. What do you think could be the problem?
I have pins 3,4,5 connected together and then on the other side, 12,13,14 are connected together. I am also using 24R on both sides for the D+ and D- lines.

Best Regards,
Ray

By: Oleg

Oleg — Sun, 11 Apr 2010 23:22:41 +0000

I haven’t tested it with 2.5 drives. It works fine with 3.5 external drives. What is the difference?

By: MM

MM — Sun, 11 Apr 2010 20:38:52 +0000

Hi,
Have you tested your USB Isolator with external 2.5inch portal hard drives?

Thanks

By: oleg

oleg — Tue, 01 Dec 2009 18:23:41 +0000

I’m glad you got it running; however, powering the isolator from a computer is wrong. It might work but it won’t isolate. You need to use separate power supply fro peripheral side.

By: uwe

uwe — Tue, 01 Dec 2009 15:37:02 +0000

Hi Oleg,

I have power off my Laptop, not only a reboot.
Now i works well, in fast mode and with usbasp!
A good job….

regards from Germany

Uwe

By: oleg

oleg — Mon, 30 Nov 2009 17:45:21 +0000

From what I can see, USBasp should be compatible with this isolator. Have you tried other high-speed devices, like usb flash drive, for example?

Also, tell me about your power supply – can you measure 5volts with USBasp connected?

By: uwe

uwe — Mon, 30 Nov 2009 15:51:31 +0000

hi Oleg,

the board works great with a mice in low speed mode
in fast speed mode i get only the USB device not recognized error.
I try to use an usbasp Adapter , no way, not slow or fast.
I get only USB device not recognized. :-(

regards from Germany

Uwe

By: oleg

oleg — Wed, 28 Oct 2009 23:24:19 +0000

Thank you for the catch – I’ll make corrections to the article!