There were even some Fake FTDI chips about a few years ago.
In Windows, use the Device Manager to view the list of connected
devices. Look under printer & serial devices, if a Serial device is
marked with a yellow warning triangle with a ! in the middle, there is a
problem between the driver and the device itself.
I've come across some fake IC's that were marked up as FTDI, but
identified themselves to the OS as Prolific! So, obvious fakes. (Though
on a Linux box, they did work OK as Prolific devices.) That was for a
work project too, we got our refund though.
(I've given up with Windows for my own personal and Ham useage, no
regrets...)
I wanted FTDI specifically, as you can program the behaviour of the
status lines, and also the "sense" of the data lines. I needed the TX
data line inverted from normal (to accommodate an Fibre Optic sender,
but the RX line left as default, as the FO RX device doesn't invert the
data, in that configuration, with the pre-existing TTL - Fibre interface
boards I had to use.)
The Fake FTDI chips allowed me to do that without error, but did't
actually make the changes, or "stick" the settings in their internal memory.
If I need any USB-Serial bridge products, I now only buy from FTDI
direct, or from reputable sources (but of course, the cost is higher
than the "other" sources.)
You get what you pay for.
73. Nic.
Dave G0WBX(G8KBV)
On 11/07/2022 20:47, Nic Heath wrote:
Dave
That is possible.
Windows and linux identified my chip as made by FTDI. I wasn't sure
how to check on mac.
I was/am using a CT-1 from ttl2usb dot com.
Hard to tell if ttl2usb dot com sourced a bad chip or not.
I have had this serial device for quite a few years. But the last time
I used it I was using windows 7.
-Nic
On Mon, Jul 11, 2022 at 2:35 PM Dave B via chirp_users
<[email protected]> wrote:
On 11/07/2022 20:00, [email protected] wrote:
> I don't really understand why windows with the latest version
would not
> work or mac OS with the latest version would not work. But this
old version
> on linux did.
What data lead were you using? If it uses a Prolific USB-Serial
bridge, it may be an old type of chip, or a clone. Either way
Windows
(and many Mac systems) will not use them. (Without compromising the
security of your system by blocking automatic updates and then
manually
installing an earlier driver suite.)
But Linux (even recent distro's) use them just fine, regardless. Had
similar issues locally, with a group that uses dozens of Baofeng
radios. All the interface leads used "hookey" chipsets. A
Windows box
and a Mac, both failed. My old Dell running Mint, "just worked"...
Counterfeit IC's are rife in that part of the gadget after market.
Take care.
Dave G0WBX(G8KBV)
--
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