Re: Just received ThumbDV and need ThumbTest doesn't see it #thumbdv

David Dennis

I assume the ThumbDV is using an FTDI device for the USB to Serial conversion. 

I’ve noticed similar issues when not plugged directly into the PC.   This is compared to a Powered Hub.   I’m starting to be suspect of the FTDI driver.    My guess is the driver may not be forgiving of some timing issue that is made worse when connected through a hub.   But that is just a wild guess.





From: <> On Behalf Of Dave Slotter, W3DJS
Sent: Tuesday, April 28, 2020 3:50 PM
To: Notification <>
Subject: Re: [ambe] Just received ThumbDV and need ThumbTest doesn't see it #thumbdv


HAH! That was it!


Connecting the ThumbDV directly to the laptop's embedded USB port works. Connecting it to a Dell laptop dock (powered) does not.


Of course, that's terribly frustrating. The point of the dock is to avoid plugging in / unplugging equipment.


Any idea how to solve this?




On Tue, Apr 28, 2020 at 4:28 PM Bryan Hoyer <bhhoyer@...> wrote:


I’m baffled. It looks fine. We only change a few values, as you can see in the script, and the manufacturing date is entered by hand and it is correct as well. Are you direct connected to the machine? We have seen some problems with unpowered hubs.


- Dave

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